- Manufacturer: Greenfield Industries
- Type: Drill
- Overall Length: 4.625
- Number of Flutes: 2
- Flute Type: Spiral
- Shank Size: 0.3281
- Point Angle: 135
- Point Type: Split
- Material: HSS
- Finish: Steam Oxide
- Brand: Chicago-Latrobe®
- Diameter: 0.3281
- Drill Construction: Heavy-Duty
- Drill Type: Jobber Drill
- Shank Length: 1.3125
- Tool Size: 21/64"
150 A SP 21/64