2Pcs 14mm High Speed Steel Twist Drill Bit with Hex Shank 156mm Length Vacuum Clamps 2 Terminals

2 Terminals

Thread Diameter: 54mm / 2

Hook Opening: 11mm/0

128 inches

And then seal the thread connection with the PTFE tape

2Pcs 14mm High Speed Steel Twist Drill Bit with Hex Shank 156mm Length Vacuum Clamps 2 TerminalsDescription: 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.