The head pivots to accommodate a range of diameters, fitting into the slots on the circumference of collars, bearings, and other machine tool components.
 | L | C | D | A | B |
| 15 - 35 | 140 | 2.5 | 2.5 | 7 | 25 |
| 35 - 50 | 201 | 4 | 4 | 10 | 41.5 |
| 50 - 80 | 262 | 5 | 5 | 12 | 68 |
| 80 - 120 | 320 | 5.5 | 5.5 | 14 | 86 |
| 120 - 180 | 418 | 7.5 | 9 | 16 | 134 |