| Manufacturer Part Number | GMF21990 |
| Diameter (Decimal Inch) | 0.3750" |
| Diameter (Inch) | 3/8" |
| Diameter (mm) | 9.53mm |
| Shank Diameter (Decimal Inch) | 0.3750" |
| Shank Diameter (Inch) | 3/8" |
| Shank Diameter (mm) | 9.53mm |
| Length of Cut (Decimal Inch) | 0.6250" |
| Length of Cut (Inch) | 5/8" |
| Length of Cut (mm) | 15.88mm |
| Overall Length (Decimal Inch) | 3.0000" |
| Overall Length (Inch) | 3" |
| Overall Length (mm) | 76.20mm |
| Corner Radius (Decimal Inch) | 0.0400" |
| Corner Radius (Inch) | 1/25" |
| Shank Style | Plain |
| Helix Angle (Degree) | Variable |
| Coating | AlCrN |
| Number of Flutes | 4 |
| Corner Radius (mm) | 1.02mm |
| Cut Type | Center Cut |
| Corner Type | Corner Radius |
| Series | GMF21 |
| Material | Carbide |
| Product Type | Corner Radius With Neck End Mill |