| Inside Diameter |
Outside Diameter |
Screw | Type |
|||
| Inches | Mm | Mm | Holes | Diameter | hole-hole | |
| 1/2″ | 21,3 | 95 | 4 | Μ12 | 14 | 15 |
| 3/4″ | 26,9 | 105 | 4 | Μ12 | 14 | 20 |
| 1″ | 33,7 | 115 | 4 | Μ12 | 14 | 25 |
| 1 1/4″ | 42,4 | 140 | 4 | Μ16 | 18 | 32 |
| 1 1/2″ | 48,3 | 150 | 4 | Μ16 | 18 | 40 |
| 2″ | 60,3 | 165 | 4 | Μ16 | 18 | 50 |
| 2 1/2″ | 76,1 | 185 | 4 | Μ16 | 18 | 65 |
| 3″ | 88,9 | 200 | 4 | Μ16 | 18 | 80 |
| 4″ | 114,3 | 220 | 8 | Μ16 | 18 | 100 |
| 5″ | 139,7 | 250 | 8 | Μ16 | 18 | 125 |
| 6″ | 168,3 | 285 | 8 | Μ20 | 23 | 150 |
| 7″ | 193,7 | 315 | 8 | Μ20 | 23 | 175 |
| 8″ | 219,1 | 340 | 8 | Μ20 | 23 | 200 |
| 10″ | 273 | 395 | 12 | Μ20 | 23 | 250 |
| 12″ | 323,9 | 445 | 12 | Μ20 | 23 | 300 |
| 14″ | 355,6 | 505 | 12 | Μ20 | 23 | 350 |
| 16″ | 406,4 | 565 | 12 | Μ24 | 27 | 400 |
