Hyamass HSS Step Dril Bit Set,Unibit Set, 24 Sizes in 3Pcs Titanium Coated Drill Bits,1/4" Hex Shank,High Speed Steel Drill Cone Bits for Sheet Metal,Unibit Step Drill Bits, Industrial Unibit

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  • DOUBLE CUTTING BLADES DESIGN The HSS step drill bit set is designed with double cutting blades, which provides deburrs chip, dust and debris for clearance and smooth cutting.prevents metal scurf from flying around for improved safety.With a split point tip that accelerates cutting speed while preventing angled walking away from center line of bore.
  • WELL PERFORMED The multiple hole drill bit set include 24 size, which can cuts through steel, sheet metal, wood board and other surfaces creating relatively clean holes as you drill. Suitable for home DIY, and general building engineering use.t slippage and shedding during the rotation.a step drill can be used in a variety of hole sizes.High-step design allows you to stop and won t drill big!
  • SET INCLUDES The cone drill bits set includes 3 common sizes for versatility. Bit #1 (5 steps) 4mm, 6mm, 8mm, 10mm, 12mm; Bit #2 (10 steps) 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm; Bit #3 (9 steps) 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm.

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