Drillpro 3Pcs HSS Round Shank Titanium Coated Quick Change Step Drill Bits 3/16-1/2 1/8-1/2 1/4-3/4 Inch

Descriptions Drillpro 3Pcs HSS Round Shank Titanium Coated Quick Change Step Drill Bits 3 16 1 2 1 8 1 2 1 4 3 4 InchSpecification Product NameStep Drill BitsBrandDrillproMaterialHigh Speed Steel 4241Suitable ForUsed for the hardness of the material which is below 25° like iron borad steel board PVC board Insulation board etc SurfaceTitanium PlatedShankRoundScopThin iron plate aluminum insulation panels PVC panels 4mm thickness within the timber Quantity1 Pc x Step Drill BitsSizeDrilling Range Φ inch HoleFlute Height mm Height of Shank MM Shank Diameter Φ mm 3 16 1 23 16 1 4 5 16 3 8 7 16 1 26352561 8 1 21 8 3 32 5 32 7 32 1 4 9 32 5 16 11 32 3 8 13 32 7 16 15 32 1 213522561 4 3 41 4 5 16 3 8 7 16 1 2 9 16 5 8 11 16 3 49502510Features High speed steel material more durable Titanium coated to reduce friction and run cooler No need for a pilot hole can automatically deburr holes as you drill Special step stucture can drill different size holes 1 step drill can be used as 1 box of drill bit Working with water cooling can effectively extend the service life of bit drilling speed 250 400 recommended Widely used to cut holes in a variety of material like steel wood thin iron aluminum alloy insulation boards PVC sheet ect Package Included 1 Pc x 3 16 1 2 Step Drill Bit1 Pc x1 8 1 2 Step Drill Bit1 Pc x1 4 3 4 Step Drill BitMore Details