| Effective Roller Length |
19mm (3/4＂) |
25.4mm (1＂) |
32mm (1-1/4＂) |
38mm (1-1/2＂) |
44.5mm (1-3/4＂) |
51mm (2＂) |
57mm (2-1/4＂) |
63.5mm (2-1/2＂) |
70mm (2-3/4＂) |
76mm (3＂) |
83mm (3-1/4＂) |
89mm (3-1/2＂) |
95mm (3-3/4＂) |
 |
||||
Effective Roller |
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |||||
| Tool No. | Expansion Range D | Mandrel No. | Shank Square S. mm(in.) |
|||||||||||||||
| Min. mm(in.) |
Max. mm(in.) | Drum | Header | Short | ||||||||||||||
| 28 | 20.6 (1.811) |
24.2 (0.953) |
24.0 (0.945) |
23.8 (0.937) |
23.6 (0.929) |
23.4 (0.921) |
DH-0S | HM-0S | 12.7(1/2) | |||||||||
| 29 | 21.4 (0.843) |
25.2 (0.992) |
25.0 (0.984) |
24.8 (0.976) |
24.6 (0.969) |
24.4 (0.961) |
DH-1S | HM-1S | 12.7(1/2) | |||||||||
| 30 | 22.2 (0.874) |
26.0 (1.024) |
25.8 (1.016) |
25.6 (1.008) |
25.4 (1.0) |
25.2 (0.992) |
25.0 (0.984) |
|||||||||||
| 31 | 23.0 (0.906) |
26.8 (1.055) |
26.2 (1.047) |
26.4 (1.039) |
26.2 (1.031) |
26.0 (1.024) |
25.8 (1.016) |
|||||||||||
| 32 | 23.8 (0.937) |
27.6 (1.087) |
27.4 (1.079) |
27.0 (1.071) |
27.2 (1.063) |
26.8 (1.055) |
26.6 (1.047) |
26.3 (1.035) |
||||||||||
| 33 | 24.6 (0.969) |
28.4 (1.118) |
28.2 (1.110) |
28.0 (1.102) |
27.8 (1.094) |
27.6 (1.087) |
27.4 (1.079) |
27.1 (1.067) |
26.9 (1.059) |
|||||||||
| 34 | 25.4 (1.0) |
30.0 (1.118) |
29.8 (1.173) |
29.6 (1.165) |
29.4 (1.157) |
29.2 (1.150) |
29.0 (1.142) |
28.7 (1.130) |
28.5 (1.122) |
DH-2S | HM-2S | 12.7(1/2) | ||||||
| 35 | 26.2 (1.031) |
30.8 (1.213) |
30.6 (1.205) |
30.4 (1.197) |
30.2 (1.189) |
30.0 (1.181) |
29.8 (1.173) |
29.5 (1.161) |
29.3 (1.154) |
29.1 (1.146) |
||||||||
| 36 | 27.0 (1.063) |
31.6 (1.244) |
31.4 (1.236) |
31.2 (1.228) |
30.9 (1.217) |
30.7 (1.209) |
30.5 (1.201) |
30.3 (1.193) |
30.1 (1.185) |
29.9 (1.177) |
||||||||
| 37 | 27.8 (1.094) |
32.4 (1.244) |
32.2 (1.268) |
32.0 (1.260) |
31.7 (1.248) |
31.5 (1.240) |
31.3 (1.232) |
31.1 (1.224) |
30.9 (1.217) |
30.7 (1.209) |
30.5 (1.201) |
|||||||
| 38 | 28.6 (1.126) |
33.2 (1.307) |
33.0 (1.299) |
32.8 (1.291) |
32.5 (1.280) |
32.3 (1.272) |
32.1 (1.264) |
31.9 (1.256) |
31.7 (1.248) |
31.5 (1.240) |
31.3 (1.232) |
|||||||
| 39 | 29.4 (1.157) |
34.6 (1.362) |
34.4 (1.354) |
34.2 (1.346) |
33.9 (1.335) |
33.7 (1.327) |
33.5 (1.319) |
33.3 (1.311) |
33.1 (1.303) |
32.9 (1.295) |
32.7 (1.287) |
32.5 (1.280) |
DM-3 | HM-3 | S-3,4,5,6 | 12.7(1/2) | ||
| 40 | 30.2 (1.189) |
35.4 (1.394) |
35.2 (1.386) |
35.0 (1.378) |
34.7 (1.366) |
34.5 (1.358) |
34.3 (1.350) |
34.1 (1.343) |
33.9 (1.355) |
33.7 (1.327) |
33.5 (1.319) |
33.3 (1.311) |
||||||
| 41 | 31.0 (1.220) |
36.2 (1.425) |
36.0 (1.417) |
35.8 (1.409) |
35.5 (1.398) |
35.3 (1.390) |
35.1 (1.382) |
34.9 (1.374) |
34.7 (1.366) |
34.5 (1.358) |
34.3 (1.350) |
34.1 (1.343) |
33.8 (1.331) |
|||||
| 42 | 31.8 (1.252) |
37.0 (1.457) |
36.8 (1.449) |
36.6 (1.441) |
36.3 (1.429) |
36.1 (1.421) |
35.9 (1.413) |
35.7 (1.406) |
35.5 (1.398) |
35.3 (1.390) |
35.1 (1.382) |
34.9 (1.374) |
34.6 (1.362) |
|||||
| 43 | 32.5 (1.280) |
37.7 (1.484) |
37.5 (1.476) |
37.3 (1.469) |
37.1 (1.461) |
36.9 (1.453) |
36.7 (1.445) |
36.5 (1.437) |
36.3 (1.429) |
36.0 (1.417) |
35.8 (1.409) |
35.6 (1.402) |
35.4 (1.394) |
35.2 (1.386) |
||||
| 44 | 33.3 (1.311) |
38.5 (1.516) |
38.3 (1.508) |
38.1 (1.5) |
37.9 (1.492) |
37.7 (1.484) |
37.5 (1.476) |
37.3 (1.469) |
37.1 (1.461) |
36.8 (1.449) |
36.6 (1.441) |
36.4 (1.433) |
36.2 (1.425) |
36.0 (1.417) |
||||
| 45 | 34.1 (1.343) |
40.1 (1.579) |
39.9 (1.571) |
39.7 (1.563) |
39.5 (1.555) |
39.3 (1.547) |
39.1 (1.539) |
38.9 (1.531) |
38.7 (1.524) |
38.4 (1.512) |
38.2 (1.504) |
38.0 (1.496) |
37.8 (1.488) |
37.6 (1.480) |
DM-4 | HM-4 | S-4,5,6,7 | 12.7(1/2) |
| 48 | 34.9 (1.374) |
41.0 (1.614) |
40.8 (1.606) |
40.6 (1.598) |
40.4 (1.591) |
40.2 (1.583) |
40.0 (1.575) |
39.8 (1.567) |
39.6 (1.559) |
39.3 (1.547) |
39.1 (1.539) |
38.9 (1.531) |
38.7 (1.524) |
38.5 (1.516) |
DM-10 | HM-10 | SM-10,11 | 19.0(3/4) |
| 49 | 36.5 (1.437) |
42.6 (1.677) |
42.4 (1.669) |
42.2 (1.661) |
42.0 (1.654) |
41.8 (1.646) |
41.6 (1.638) |
41.4 (1.630) |
41.1 (1.618) |
40.9 (1.610) |
40.7 (1.602) |
40.5 (1.594) |
40.3 (1.587) |
40.1 (1.579) |
||||
| 50 | 38.1 (1.5) |
45.8 (1.803) |
45.6 (1.795) |
45.4 (1.787) |
45.2 (1.780) |
45.0 (1.772) |
44.8 (1.764) |
44.6 (1.756) |
44.3 (1.744) |
44.1 (1.736) |
43.9 (1.728) |
43.7 (1.720) |
43.5 (1.713) |
43.3 (1.705) |
DM-11 | HM-11 | SM-11,12,13 | 19.0(3/4) |
| 51 | 39.7 (1.563) |
47.4 (1.866) |
47.2 (1.858) |
47.0 (1.850) |
46.8 (1.843) |
46.6 (1.835) |
46.4 (1.827) |
46.2 (1.819) |
45.9 (1.807) |
45.7 (1.799) |
45.5 (1.791) |
45.3 (1.783) |
45.1 (1.776) |
44.9 (1.768) |
||||
| 52 | 41.3 (1.626) |
49.0 (1.929) |
48.8 (1.921) |
48.6 (1.913) |
48.4 (1.906) |
48.2 (1.898) |
47.9 (1.886) |
47.7 (1.878) |
47.5 (1.870) |
47.3 (1.862) |
47.1 (1.854) |
46.9 (1.846) |
46.7 (1.839) |
46.5 (1.831) |
||||
| 53 | 42.9 (1.689) |
50.6 (1.992) |
50.4 (1.984) |
50.2 (1.976) |
50.0 (1.969) |
49.8 (1.961) |
49.5 (1.949) |
49.3 (1.941) |
49.1 (1.933) |
48.9 (1.925) |
48.7 (1.917) |
48.5 (1.909) |
48.3 (1.902) |
48.1 (1.894) |
||||
| 54 | 44.5 (1.752) |
52.2 (2.055) |
52.0 (2.047) |
51.9 (2.039) |
51.6 (2.031) |
51.4 (2.024) |
51.1 (2.012) |
50.9 (2.004) |
50.7 (1.996) |
50.5 (1.988) |
50.3 (1.980) |
50.1 (1.972) |
49.9 (1.965) |
49.7 (1.957) |
DM-12 | HM-12 | SM-12,13,14 | 19.0(3/4) |
| 55 | 46.0 (1.811) |
53.8 (2.118) |
53.6 (2.110) |
53.4 (2.102) |
53.1 (2.091) |
52.9 (2.083) |
52.7 (2.075) |
52.5 (2.067) |
52.3 (2.059) |
52.1 (2.051) |
51.9 (2.043) |
51.7 (2.035) |
51.5 (2.028) |
51.3 (2.020) |
||||
| 56 | 47.6 (1.874) |
55.3 (2.177) |
55.1 (2.169) |
54.9 (2.161) |
54.7 (2.154) |
54.5 (2.146) |
54.3 (2.138) |
54.1 (2.130) |
53.9 (2.122) |
53.7 (2.114) |
53.5 (2.106) |
53.2 (2.094) |
53.0 (2.087) |
52.8 (2.079) |
||||
| 57 | 49.2 (1.937) |
56.9 (2.240) |
56.7 (2.232) |
56.5 (2.224) |
56.3 (2.217) |
56.1 (2.209) |
55.9 (2.201) |
55.7 (2.193) |
55.5 (2.185) |
55.3 (2.177) |
55.1 (2.169) |
54.8 (2.157) |
54.6 (2.150) |
54.4 (2.142) |
||||
| 58 | 50.8 (2.0) |
58.5 (2.303) |
58.3 (2.295) |
58.1 (2.287) |
57.9 (2.280) |
57.7 (2.272) |
57.5 (2.264) |
57.3 (2.256) |
57.1 (2.248) |
56.8 (2.236) |
56.6 (2.228) |
56.4 (2.220) |
56.2 (2.213) |
56.0 (2.205) |
DM-13 | HM-14 | SM-14,15,16,17 | 19.0(3/4) |
| 59 | 52.4 (2.063) |
60.1 (2.366) |
59.9 (2.358) |
59.7 (2.350) |
59.5 (2.343) |
59.3 (2.335) |
59.1 (2.327) |
58.9 (2.319) |
58.6 (2.307) |
58.4 (2.299) |
58.2 (2.291) |
58.0 (2.283) |
57.8 (2.276) |
57.6 (2.268) |
||||
| 60 | 54.0 (2.126) |
61.7 (2.429) |
61.5 (2.421) |
61.3 (2.413) |
61.1 (2.406) |
60.9 (2.398) |
60.6 (2.386) |
60.4 (2.378) |
60.2 (2.370) |
60.0 (2.362) |
59.8 (2.354) |
59.6 (2.346) |
59.4 (2.339) |
59.2 (2.331) |
||||
| 61 | 55.6 (2.189) |
63.3 (2.492) |
63.1 (2.484) |
62.9 (2.476) |
62.7 (2.469) |
62.5 (2.461) |
62.2 (2.449) |
62.0 (2.441) |
61.8 (2.433) |
61.6 (2.425) |
61.4 (2.417) |
61.2 (2.409) |
61.0 (2.402) |
60.8 (2.394) |
||||
| 62 | 57.2 (2.252) |
66.0 (2.598) |
65.8 (2.591) |
65.5 (2.579) |
65.3 (2.571) |
65.1 (2.563) |
64.8 (2.551) |
64.6 (2.543) |
64.4 (2.535) |
64.1 (2.524) |
63.9 (2.516) |
63.7 (2.508) |
63.5 (2.5) |
DM-14 | HM-14 | SM-14,15,16,17 | 19.0 (3/4) | |
| 63 | 58.7 (2.311) |
67.6 (2.661) |
67.4 (2.654) |
67.1 (2.642) |
66.9 (2.634) |
66.7 (2.626) |
66.4 (2.614) |
66.2 (2.606) |
65.9 (2.594) |
65.7 (2.587) |
65.5 (2.579) |
65.2 (2.567) |
65.0 (2.559) |
|||||
| 64 | 60.3 (2.374) |
69.2 (2.724) |
69.0 (2.717) |
68.7 (2.705) |
68.5 (2.697) |
68.3 (2.689) |
68.0 (2.677) |
67.8 (2.669) |
67.5 (2.657) |
67.3 (2.650) |
67.1 (2.642) |
66.8 (2.630) |
66.6 (2.622) |
|||||
| 65 | 61.9 (2.437) |
70.8 (2.787) |
70.5 (2.776) |
70.3 (2.768) |
70.1 (2.760) |
69.8 (2.748) |
69.6 (2.740) |
69.4 (2.732) |
69.1 (2.720) |
68.9 (2.713) |
68.7 (2.705) |
68.4 (2.693) |
68.2 (2.685) |
|||||
| 66 | 63.5 (2.5) |
72.3 (2.86) |
72.1 (2.839) |
71.9 (2.831) |
71.6 (2.819) |
71.4 (2.819) |
71.2 (2.803) |
70.9 (2.791) |
70.7 (2.783) |
70.5 (2.776) |
70.2 (2.764) |
70.0 (2.756) |
69.8 (2.748) |
|||||
| 67 | 65.1 (2.563) |
73.9 (2.909) |
73.7 (2.902) |
73.5 (2.894) |
73.2 (2.882) |
73.0 (2.874) |
72.8 (2.866) |
72.5 (2.854) |
72.3 (2.846) |
72.0 (2.835) |
71.8 (2.827) |
71.6 (2.819) |
71.4 (2.811) |
DM-15 | HM-15 | SM-15,16,17,18 | 19.0(3/4) | |
| 68 | 66.7 (2.626) |
75.5 (2.972) |
75.3 (2.965) |
75.0 (2.953) |
74.8 (2.945) |
74.6 (2.937) |
74.3 (2.937) |
74.1 (2.917) |
73.9 (2.909) |
73.6 (2.898) |
73.4 (2.890) |
73.2 (2.882) |
73.0 (2.874) |
DM-16 | HM-16 | SS-16,17,18,19 | 25.4(1) | |
| 69 | 68.3 (2.689) |
77.1 (3.035) |
76.9 (3.028) |
76.6 (3.016) |
76.4 (3.008) |
76.2 (3.0) |
75.9 (2.988) |
75.7 (2.980) |
75.5 (2.972) |
75.2 (2.961) |
75.0 (2.953) |
74.8 (2.945) |
74.6 (2.937) |
|||||
| 70 | 69.9 (2.752) |
78.7 (3.098) |
78.5 (3.091) |
78.2 (3.079) |
78.0 (3.071) |
77.8 (3.063) |
77.5 (3.051) |
77.3 (3.043) |
77.0 (3.031) |
76.8 (3.024) |
76.6 (3.016) |
76.3 (3.004) |
76.1 (2.996) |
|||||
| 71 | 71.4 (2.811) |
80.3 (3.161) |
80.1 (3.154) |
79.8 (3.142) |
79.6 (3.314) |
79.4 (3.126) |
79.1 (3.114) |
78.9 (3.106) |
78.6 (3.094) |
78.4 (3.087) |
78.2 (3.079) |
77.9 (3.067) |
77.7 (3.059) |
|||||
| 72 | 73.0 (2.874) |
81.9 (3.224) |
81.6 (3.213) |
81.4 (3.205) |
81.2 (3.197) |
80.9 (3.185) |
80.7 (3.177) |
80.5 (3.169) |
80.2 (3.157) |
80.0 (3.150) |
79.8 (3.142) |
79.5 (3.130) |
79.3 (3.122) |
|||||
| 73 | 74.6 (2.937) |
83.5 (3.287) |
83.2 (3.276) |
83.0 (3.268) |
82.8 (3.260) |
82.5 (3.248) |
82.3 (3.240) |
82.1 (3.232) |
81.8 (3.220) |
81.6 (3.213) |
81.4 (3.205) |
81.1 (3.193) |
80.9 (3.185) |
DM-17 | HM-17 | SS-17,18,19,20 | 25.4(1) | |
| 74 | 76.2 (3.0) |
86.3 (3.398) |
86.1 (3.390) |
85.8 (3.378) |
85.5 (3.366) |
85.3 (3.358) |
85.0 (3.346) |
84.7 (3.335) |
84.5 (3.327) |
84.2 (3.315) |
84.0 (3.307) |
83.7 (3.295) |
83.5 (3.287) |
DM-18 | HM-18 | SS-18,19,20,21,22 | 25.4(1) | |
| 75 | 77.8 (3.063) |
87.9 (3.461) |
87.6 (3.449) |
87.4 (3.441) |
87.1 (3.430) |
86.9 (3.421) |
86.6 (3.409) |
86.3 (3.398) |
86.1 (3.390) |
85.8 (3.378) |
85.5 (3.366) |
85.3 (3.358) |
85.0 (3.346) |
|||||
| 76 | 79.4 (3.126) |
89.5 (3.524) |
89.2 (3.512) |
89.0 (3.504) |
88.7 (3.492) |
88.5 (3.484) |
88.2 (3.472) |
87.9 (3.461) |
87.7 (3.453) |
87.4 (3.441) |
87.1 (3.429) |
86.9 (3.421) |
86.6 (3.409) |
|||||
| 77 | 81.0 (3.189) |
91.0 (3.583) |
90.8 (3.575) |
90.6 (3.567) |
90.3 (3.555) |
90.0 (3.543) |
89.8 (3.535) |
89.5 (3.524) |
89.2 (3.512) |
89.0 (3.504) |
88.7 (3.492) |
88.4 (3.480) |
88.2 (3.472) |
|||||
| 78 | 82.6 (3.252) |
92.7 (3.650) |
92.4 (3.638) |
92.1 (3.626) |
91.9 (3.618) |
91.6 (3.606) |
91.4 (3.598) |
91.1 (3.587) |
90.8 (3.575) |
90.6 (3.567) |
90.3 (3.555) |
90.0 (3.543) |
89.8 (3.535) |
|||||
| 79 | 84.1 (3.311) |
94.3 (3.713) |
94.0 (3.701) |
93.7 (3.689) |
93.5 (3.681) |
93.2 (3.669) |
92.9 (3.657) |
92.7 (3.650) |
92.4 (3.638) |
92.1 (3.626) |
91.9 (3.618) |
91.6 (3.606) |
91.3 (3.594) |
DM-19 | HM-19 | SS-19,20,21,22,23 | 25.4(1) | |
| 80 | 85.7 (3.374) |
95.9 (3.776) |
95.6 (3.764) |
95.3 (3.752) |
95.1 (3.744) |
94.8 (3.732) |
94.5 (3.720) |
94.3 (3.713) |
94.0 (3.701) |
93.7 (3.689) |
93.5 (3.681) |
93.2 (3.669) |
93.0 (3.661) |
DM-20 | HM-20 | SS-20,21,22,23,24 | 25.4(1) | |
| 81 | 87.3 (3.437) |
97.4 (3.835) |
97.2 (3.827) |
96.9 (3.815) |
96.6 (3.803) |
96.4 (3.795) |
96.1 (3.783) |
95.8 (3.772) |
95.6 (3.764) |
95.3 (3.752) |
95.1 (3.744) |
94.8 (3.732) |
94.6 (3.724) |
|||||
| 82 | 88.9 (3.5) |
99.0 (3.898) |
98.8 (3.890) |
98.5 (3.878) |
98.2 (3.866) |
98.0 (3.858) |
97.7 (3.846) |
97.4 (3.835) |
97.2 (3.827) |
96.9 (3.815) |
96.7 (3.807) |
96.4 (3.795) |
96.2 (3.787) |
|||||
| 83 | 90.5 (3.563) |
100.6 (3.961) |
100.3 (3.949) |
100.1 (3.941) |
99.8 (3.929) |
99.6 (3.921) |
99.3 (3.909) |
99.0 (3.898) |
98.8 (3.890) |
98.5 (3.878) |
98.2 (3.866) |
98.0 (3.858) |
97.7 (3.846) |
|||||
| 84 | 92.1 (3.626) |
102.2 (4.024) |
101.9 (4.012) |
101.7 (4.004) |
101.4 (3.992) |
101.2 (3.984) |
100.9 (3.972) |
100.6 (3.961) |
100.4 (3.953) |
100.1 (3.941) |
99.8 (3.929) |
99.6 (3.921) |
99.4 (3.913) |
|||||
| 85 | 93.7 (3.689) |
103.8 (4.087) |
103.5 (4.075) |
103.3 (4.067) |
103.0 (4.055) |
102.7 (4.043) |
102.5 (4.035) |
102.2 (4.024) |
101.9 (4.012) |
101.7 (4.004) |
101.4 (3.992) |
101.1 (3.980) |
100.8 (3.969) |
DM-21 | HM-21 | SS-21,22,23,24,25 | 25.4(1) | |
| 86 | 95.3 (3.752) |
105.4 (4.150) |
105.1 (4.138) |
104.9 (4.130) |
104.6 (4.118) |
104.3 (4.106) |
104.1 (4.098) |
103.8 (4.087) |
103.5 (4.075) |
103.3 (4.067) |
103.0 (4.055) |
102.7 (4.043) |
102.4 (4.031) |
DM-22 | HM-22 | SS-22,23,24,25,26 | 25.4(1) | |
| 87 | 96.8 (3.811) |
107.0 (4.213) |
106.7 (4.201) |
106.4 (4.189) |
106.2 (4.181) |
105.9 (4.169) |
105.7 (4.161) |
105.4 (4.150) |
105.1 (4.138) |
104.9 (4.130) |
104.6 (4.118) |
104.3 (4.106) |
104.0 (4.094) |
|||||
| 88 | 98.4 (3.874) |
108.6 (4.276) |
108.3 (4.264) |
108.0 (4.252) |
107.8 (4.244) |
107.5 (4.232) |
107.3 (4.224) |
107.0 (4.213) |
106.7 (4.201) |
106.5 (4.193) |
106.2 (4.181) |
105.9 (4.169) |
105.6 (4.157) |
|||||
| 89 | 100.0 (3.937) |
110.2 (4.339) |
109.9 (4.327) |
109.6 (4.315) |
109.4 (4.307) |
109.1 (4.295) |
108.8 (4.283) |
108.6 (4.276) |
108.3 (4.264) |
108.0 (4.252) |
107.8 (4.244) |
107.5 (4.232) |
107.2 (4.220) |
|||||
| 90 | 101.6 (4.000) |
111.7 (4.398) |
111.5 (4.390) |
111.2 (4.378) |
110.9 (4.336) |
110.7 (4.358) |
110.4 (4.346) |
110.1 (4.335) |
109.9 (4.327) |
109.6 (4.315) |
109.4 (4.307) |
109.1 (4.295) |
108.8 (4.283) |
|||||
| 91 | 103.2 (4.063) |
113.3 (4.461) |
113.1 (4.453) |
112.8 (4.441) |
112.5 (4.429) |
112.3 (4.421) |
112.0 (4.409) |
111.8 (4.402) |
111.5 (4.390) |
111.2 (4.378) |
110.0 (4.331) |
110.7 (4.358) |
110.4 (4.346) |
DM-23 | HM-23 | SS-23,24,25,26,27 | 25.4(1) | |
| 92 | 104.8 (4.126) |
114.9 (4.524) |
114.7 (4.516) |
114.4 (4.504) |
114.1 (4.492) |
113.9 (4.484) |
113.6 (4.472) |
113.4 (4.465) |
113.1 (4.453) |
112.8 (4.441) |
112.6 (4.433) |
112.3 (4.421) |
112.0 (4.409) |
DM-24 | HM-24 | SS-24,25,26,27,28 | 25.4(1) | |
• Standard Short Mandrels are designed for use with Tube Expandars up to effective roller length No.4(44.5mm)
• Tool No.39 & larger sizes Tube Expandars have Retainer to hold Roller in Frame. For Tool No.38 & Smaller sizes, no Retatiner used.
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