3Pcs High-Speed Steel Step Drill Bit Set with Automatic Spring Loaded Center Punch Power Tools Cone Titanium Coated Metal Hole Cutter 1/4" Hex Shank Drive Quick Change 4-12mm/4-20mm/4-32mm

Price: $15.99
Product prices and availability are accurate as of 2020-10-16 10:14:30 UTC and are subject to change. Any price and availability information displayed on https://www.amazon.com/ at the time of purchase will apply to the purchase of this product.
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Product Features

1/4" Hex shaft drives are suitable for all kinds of power drills. And suitable for using to cut holes in a variety of materials including steel, brass, wood, plastic, etc. Material: HSS combined with a titanium coating. More capable and durable. Easy Drilling: Two-Flute Design for smoother cutting. High Step design let you feel the stop and never drill bigger in mistake SET INCLUDES: Bit #1 (5 steps): 4-12mm (4mm, 6mm, 8mm, 10mm, 12mm); Bit #2 (9 steps): 4-20mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm); Bit #3 (15 steps): 4-32mm (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm,30mm,32mm) According to the need to process different diameter holes, you can achieve one-time processing of large holes, no need to replace the drill bit and positioning hole.