12 Pcs. Precision Twist Drill Brand New
List R18CO No. 21 (0.1590") Heavy Duty M42-8% Cobalt Jobber Length Drills
- Jobber Drill
- Type J
- M42-8% Cobalt
Manufactured to National Aerospace Standard 907. Made of heat resistant cobalt, they display higher red hardness which permits speeds up to 30% greater than high speed steel drills and are especially effective in drilling tough, high tensile strength materials like PH stainless steel, inconel, and titanium. The 135 Deg. split point is self-centering and reduce thrust. Ideal for portable or machine drilling.
|d1 (dec.) |
|No. 21 ||0.1590 ||2.1/8 ||6 ||12 ||018321 |