2024 Big sale 10pcs/box High Speed Steel Drill Bits Metal Drilling Tool Power Tool Parts4.0mm

1、Scope of Application: Suitable for drilling holes on stainless steel iron copper aluminum wood acrylic sheet etc. 2、Applicable to ordinary pistol drill electric drill. 3、The drill bit is made of high-quality high-speed steel high sharpness and wear resistance 4、High drilling efficiency can be used in industrial and household. 5、Cutting edges are precision ground and processed to ensure fast drilling.