#3 HSS Black & Gold Quick Change Hex Shank Step Drill Bit (1/4" - 3/4" by 1/16") REDLITHIUM™ 1/2" Drive x 14mm Universal

1/2" Drive x 14mm Universal Hex Driver | Weight: 0

asphalt and concrete FEATURES: Special silicon carbide grain

1-1/2" Drive x 1-5/16" Deep - 12 Point | Weight: 5

Should be used with Freud's slotting cutter arbors 60-100 for 1/4" shanks

#3 HSS Black & Gold Quick Change Hex Shank Step Drill Bit (1/4" - 3/4" by 1/16") REDLITHIUM™ 1/2" Drive x 14mm UniversalStep drills have single radial concave flutes to create a perfectly round hole in metal, plastic wood and other thin materials without center punching. Constructed of industrial grade high speed molybdenum steel, heat treated and temperature for long life. Self starting tip. No center punching needed. Automatically deburrs top side of hole. Ideal for steel, copper, aluminum and other thin materials. They are Black and gold surface treated with a 1 4"