This drill bit has a precision ground 82 tip for countersinking most machinable metals, wood or plastic

It is made from industrial grade high speed steel for increased durability and includes a black oxide finish for added corrosion resistance

It features a five flute design reduces vibration for smoother drilling and extended life and its 1/4 In

round shank fits all handheld and stationary drills

Set includes: 1/4 In

, 3/8 In

, 1/2 In

, 5/8 In

and 3/4 In