| Diameter | D | 12 | mm |
| length | L | 12 | mm |
| Width | B | 42 | mm |
| Height | T | 35 | mm |
| Tolerance | ±0,15 | ||
| Lower tolerance | Tol H2 | -0,15 | |
| Size thread fixing screws above | K5 | M4 |
| Upper tolerance | Tol A5 | +0,15 | |
| Mounting dimension | JB | 10 | mm |
| Width across Flat | W | 3 | mm |
| Manufacturer | Part Number |
|---|---|
| Dr-Tretter | WB55 012 |
| minitec | WB 12 |
| Rodriguez | WBS 12 |
| Thomson | SB M12 |
| Rodriguez | WBAS 12 |
| NADELLA | WB12 |
