STONEGO 10/25/50Pcs HSS Steel Cobalt Mini Twist Drill Bit Set Straight Shank Hole Opener Power Drilling Punching Tools

High-concerned chemical : None Brand Name : STONEGO Origin : Mainland China DIY Supplies : Woodworking Type : Twist Drill Bit Feature: - It made of high speed steel,high hardness,good wear resistance and durability. - High hardness,good wear resistance and durability. - Has a heavy-duty spiral flute design that produces fast chip ejection. - High working efficiency, perfect punching effect and long using life. - Suitable for drilling holes in wood, walnut, Bodhi seed, etc. Specification: Material:HSS Bits sizes(optional) : 10pcs(0.8-3.0mm):0.8/1.0/1.2/1.5/1.8/2.0/2.2/2.5/2.8/3.0(mm) 25pcs(0.5-3.0mm):0.5x5/ 0.6x5/ 10x3/ 1.2x2/ 1.5x2/ 1.8x2/ 2.0x2/ 2.35x2/ 3.0x2(mm) 50pcs(1.0-3.0mm):1.0x10/ 1.5x10/ 2.0x10/ 2.5x10/ 3.0x10(mm) Length:29-59mm, 22-60mm, 33-60mm Package included: 10pcs Twist Drill Bits or 25pcs Twist Drill Bits or 50pcs Twist Drill Bits