| Manufacturer Part Number | 521216 |
| Shank Type | Taper Shank |
| Taper Size | CAT50 |
| Pilot Diameter (Inch) | 1" |
| Projection Flange to Nose End (Decimal Inch) | 1.75" |
| Nose Diameter (Decimal Inch) | 2.75" |
| Arbor Thread (Inch) | 1/2"-20 |
| Key Size (Inch) | 3/8" |
| Pilot Length (Decimal Inch) | 0.69" |
| Product Type | Shell Mill Holder |