Tungsten Carbide petra EXERCITATIO Bit
Button Bit:
| lacinia Shape | Recta (Northmanni) | Retract | Straightrac |
| Bit Diameter | 35~152mm (1 3/8 ~ 6") | 45~ 127mm (1 25/32" ~ 5") | 64~102mm (2 1/2" ~ 4"). |
| Thread | R22, R25, R28, R32, R35, R38, T38, T45, T51, T60, ST58, ST68. | R25, R28, R32, R35, R38, T38, T45, T51, T60, ST58, ST68. | R38, T38, T45, T51, T60, ST58, ST68. |
| Face Design | Flat, Convex or Drop Center; | Flat, Convex or Drop Center; | Flat, Convex or Drop Center; |
| Adiicit configurationis | Domed (Sphaerica), Hemi-sphaerica, Ballistica, Parabolica vel Conica; | Domed (Sphaerica), Hemi-sphaerica, Ballistica, Parabolica vel Conica; | Domed (Sphaerica), Hemi-sphaerica, Ballistica, Parabolica vel Conica; |
Cross Bits & X-Type Bits:
| Bits Type | Crux Bits | X-Type Bits | ||
| lacinia Shape | Recta (Northmanni) | Retract | Recta (Northmanni) | Retract |
| Bits Diameter | 35~127 mm (1 3/8" ~ 127") | 64~102 mm (2 1/2" ~ 4"). | 64~127 mm (2 1/2" ~ 5"). | 64~102 mm (2 1/2" ~ 4"). |
| Thread | R22, R25, R28, R32, R38, T38, T45, T51; | T38, T45, T51 | T38, T45, T51 | T38, T45, T51 |
