5pcs/set Step Drill Bit Set with Aluminum Case HSS Multiple Hole 50 Sizes 1/4-1-3/8 3/16-7/8 1/4-3/4 1/8-1/2 3/16-1/2

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Product Description:
5 drill bits do the work of 50
Two-flute design for faster, smoother cutting
3-sided (TRI-FLAT) shank won't slip in the drill's chuck
Cobalt coated to reduce friction and run cooler
Automatically deburrs holes as you drill
Made from long-lasting M2 steel
Includes protective aluminum carrying case
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