KIPRUN Step Drill Bit Set 6 Pcs Titanium High Speed Steel Step Drill Bits with Extra Automotive Center Punch for Metal Wood & Plastic with Aluminum Case 50 Sizes

【Drill Bit Specification】6 steps: 3/16" to 1/2", (3/16", 1/4", 5/16", 3/8", 7/16", 1/2")9 steps: 1/4" to 3/4", (1/4', 5/16', 3/8', 7/16', 1/2', 9/16', 5/8", 11/16", 3/4")10 steps: 1/4" to 1-1/4", (3/8", 1/4", 3/8", 1/2", 5/8", 3/4", 1", 1", 1-1/4", 1-1/2", 1-1/4")12 steps: 3/16" to 7/8", (3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")13 steps: 1/8" to 1/2", (1/8", 15/32", 7/16", 15/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2")material：high speed steelSize: 15.312.64.3cmWeight: 0.56 kg (including the case)【Center Punch Specification】Thimble Hardness: HRC 58-62Length: 5"Diameter: 0.5"【Package Includes】5 x Step Drill Bits1 x Center Pun