#2 HSS Black & Gold Quick Change Hex Shank Step Drill Bit (3/16" - 1/2" by 1/16") Shopify Collective Raised Grooves on Back for

Raised Grooves on Back for Measuring Thread Pitch

Shoulder Length: 80MM

Part Number: Assortment Kit #186351 Pieces

Part Number DWTSH5/8-24

Part Number: 50C700HCSSS/316

#2 HSS Black & Gold Quick Change Hex Shank Step Drill Bit (3/16" - 1/2" by 1/16") Shopify Collective Raised Grooves on Back forProduct 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