CAT40 Shell Mill Holder 1/2" Pilot Diameter x 1-3/8" Gage Length, Balanced to 25000 RPM at G2.5 DIN AD+C Coolant Feeding Feature
| Arbor/Pilot Diameter (D2) | in | 1/2 |
| Gage Length (L1) | in | 1-3/8 |
| Head Diameter (D1) | in | .62 |
| Arbor/Pilot Length (L2) | in | .56 |
| Major Diameter (D3) | in | 1.44 |
| Arbor Screw Thread | 1/4-28 | |
| Key Width | in | 1/4 |
GA8-120-4005P