High Speed Steel Black & Bronze Fractional Set 33 Piece
Thunderbit® S&D drills offer superior performance over standard HSS drills. All drills have a 1/2" shank, and are 6" overall length. Their heavy-duty construction increases tool life and performance. 118° Split Point reduces walking at the drill point.
Features:
Unique spiral flute design improves chip ejection and coolant flow
Heavy-duty core for increased strength and reduced breakage
135° self-centering split point to prevent walking
Black and Gold surface treatment for added lubricity and higher drilling speeds
Jobber length for most general applications
Made in USA
Applications:
Drilling in medium strength alloy materials
Portable drilling in metal
Tech Tips:
Speed, feed, and lube are all critical to cutting tool performance
