5 Piece HSS Black & Gold Step Drill Bit Set (Sizes #1 - #5) Shopify Collective Overall Length: 4-3/4"

Overall Length: 4-3/4"

Shank Size 49/64"

steel shot inside the head of the dead blow hammer flows smoothly without sticking or clumping and won't degrade over time

Single pass acme taps produce threads from 10 to 30 degrees in a single pass without a lead screw

5 Piece HSS Black & Gold Step Drill Bit Set (Sizes #1 - #5) Shopify Collective Overall Length: 4-3/4"Product Description Step 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