ER20 | 0.150-0.188 in | 3.8-4.8 mm | Dorian Tool
| UPC 733101- | Collet Series | Capacity (in) | Capacity (mm) | |
| 46353 | ER20-STIMC-10 | ER20 | 0.020-0.039 | 0.5-1.0 |
| 46354 | ER20-STIMC-15 |
ER20 | 0.039-0.059 | 1.0-1.5 |
| 46355 | ER20-STIMC-20 | ER20 | 0.059-0.079 | 1.5-2.0 |
| 46356 | ER20-STIMC-30 | ER20 | 0.079-0.118 | 2.0-3.0 |
| 46386 | ER20-STIMC-0937 | ER20 | 0.075-0.094 | 1.9-2.4 |
| 46387 | ER20-STIMC-0125 | ER20 | 0.087-0.125 | 2.2-3.2 |
| 46358 | ER20-STIMC-40 | ER20 |
0.118-0.157 | 3.0-4.0 |
| 46388 | ER20-STIMC-0187 | ER20 | 0.150-0.188 | 3.8-4.8 |
| 46359 | ER20-STIMC-50 | ER20 | 0.157-0.197 | 4.0-5.0 |
| 46360 | ER20-STIMC-60 |
ER20 |
0.197-0.236 | 5.0-6.0 |
| 46389 | ER20-STIMC-0250 |
ER20 |
0.213-0.250 | 5.4-6.4 |
| 46361 | ER20-STIMC-70 |
ER20 |
0.236-0.276 | 6.0-7.0 |
| 46362 | ER20-STIMC-80 |
ER20 |
0.276-0.315 | 7.0-8.0 |
| 46363 | ER20-STIMC-90 |
ER20 | 0.315-0.354 | 8.0-9.0 |
| 46390 | ER20-STIMC-0375 | ER20 | 0.335-0.375 | 8.5-9.5 |
| 46364 | ER20-STIMC-100 |
ER20 |
0.354-0.394 | 9.0-10.0 |
| 46365 | ER20-STIMC-110 |
ER20 |
0.394-0.433 | 10.0-11.0 |
| 46367 | ER20-STIMC-120 | ER20 | 0.433-0.472 | 11.0-12.0 |
| 46391 | ER20-STIMC-0500 | ER20 | 0.461-0.500 | 11.7-12.7 |
| 46368 | ER20-STIMC-130 | ER20 | 0.472-0.512 | 12.0-13.0 |
