Concentric bushing, standard head, 303 stainless steel, delivered together with W guide wheels
| 1 | Size | |
| Standard | Head Profile | |
| Concentric (stationary) | Adjustability | |
| Inch | Unit version |
| HS | 11.18 mm | Head size |
| LO | 13.970 mm | Overall height |
| HH | 6.350 mm | Head thickness |
| THH | ±.001"(±0.025mm) | Tolerance head thickness |
| MV | 10.287 mm | Mounting surface to wheel vee |
| OD | 4.7574 mm | Wheel mounting diameter |
| TOD | +0/-0.001"(+0/-0.025mm) | Tolerance wheel mounting diameter |
| LB | 7.620 mm | Wheel mounting length |
| ID | 3.5712 mm | Mounting hole diameter |
| TID | ±0.002"(±0.051mm) | Tolerance Mounting hole diameter |
| m | 4.6 g | Weight |
| #6 | Recommended mounting fasteners |
| BWC | PBC | SCHATZ | QBC |
| B1SS B1 | MVB1 | BS1 | BASCOM–BC1 |
