Amenitee 3pcs HSS Titanium Coated Step Drill Bit--PDH06A Classic Titanium Step Drill Bit Set

Description

One For All When you need to drill even, round holes without wasting time by changing drill bits, use the Amenitee Large High Speed Steel Step Cone Titanium Drill Set – 15 Steps from 4-32 mm for Plastic, Wood,Metal – Steel, Brass, Aluminum, Copper. This bit works best if you drill a"pilot hole" first and use cutting oil when drilling or cutting metal. Allow cooling during use.   Specifications Material: HSS   Shank:1/4 Hexagonal  Surface treatment: titanium  Tools:pistol drill, bench drill  Detailed Features Made with drop forged heat treated high speed steel (HSS) with titanium tin coating for longer life time.  High speed, titanium tin-coated steel Replaces 28 separate drill bits double-fluted design for fast, smooth cutting.Automatically deburrs holes as you drill.  High-speed steel, used in hardness under 25° workpiece, the plate thickness under 5 mm. Cannot be used for STAINLESS STEEL.  When inject cold water while working, can effectively extend the service life of the drill bit.  Three Ladder Drills Five step bit:4 mm,6 mm,8 mm,10 mm,12 mm  Nine step bit:4 mm,6 mm,8 mm,10 mm,12 mm,14mm,16 mm,18 mm,20 mm  Fifteen step bit:4 mm,6 mm,8 mm,10 mm,12mm,14 mm,16 mm,18 mm,20 mm,22 mm,24 mm,26 mm,28 mm,30 mm,32 mm