- Firth Mpd
- Firth Mpd
- Greenfield Industries Inc
- Hayden Twist Drill & Tool Co
- International Carbide
- Kyocera Tycom Corp
- Mc Gee Tool & Machine Co
- Precision Twist Drill Co
- Precision Twist Drill Co
- Saber Diamond Tools Inc
- Sandvik Mgt LLC
- Short Bits & Tool
- Skidmore Machine & Tool Co
- Thompson Internatinoal Inc
- Vanguard Tool Corp
