Construction typeBlockDatum diameter3.9500 in, 100.33 mmMaterialCast ironNumber of grooves3.0000O.D. (in)3.9500 , 100.33 mm
| Construction type | Block |
| Datum diameter | 3.9500 in, 100.33 mm |
| Material | Cast iron |
| Number of grooves | 3.0000 |
| O.D. (in) | 3.9500 , 100.33 mm |