2pcs 9mm High Speed Steel Twist Drill Bit with Hex Shank 125mm Length M3x21mm+6mm Inner Diameter: 67mm / 2

Inner Diameter: 67mm / 2

triangular

6L V6 2011

when push the button

Outside Diameter: 14mm / 0

2pcs 9mm High Speed Steel Twist Drill Bit with Hex Shank 125mm Length M3x21mm+6mm Inner Diameter: 67mm / 2Description: 1. Made of high speed steel with dual coating of gold titanium and black nitride for better lubrication, smoother drilling. Increase the hardness of the drill, with good wear resistance and durability. 2. Can drill with less force and good radial stability. Easier chip evacuation, better heat dissipation and increased drill durability. 3. Suitable for drilling holes in alloy steel, wood, nonferrous metal, cast iron and hard plastics. 4.