no reviews for this product. Login to place a review.
Titianium nitride coated M42 cobalt steel spot weld drills are designed for use in high strength high alloy steel commonly found in the automobile industry. The Titanium nitride coating doubles the tool life, gives additional lubricity and protects the cutting edges of the drill in tough removal applications. Type 187-DN. Made in USA.
Titanium nitride drills require a slower drilling speed of 490 RPM when drilling difficult materials.