5 Piece HSS Black & Gold Step Drill Bit Set (Sizes #1 - #5) - High Performance & Durable Cutting Tool | Drill America Replacement Parts & Accessories Cutting Depth: 3/16"

Cutting Depth: 3/16"

They are suitable for NPSC and NPSM work

Size: 1-1/8"-12

Versatile Size Range: Available for pipe sizes ranging from 6 inches to 60 inches

Drill America - 1-1/16-24 UNS HSS Taper Tap

5 Piece HSS Black & Gold Step Drill Bit Set (Sizes #1 - #5) - High Performance & Durable Cutting Tool | Drill America Replacement Parts & Accessories Cutting Depth: 3/16"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 treated. Product