5Pcs 5.2mm High Speed Steel Twist Drill Bit with Hex Shank 104mm Length OD 56.1mm to ID 54.1mm and ceramic

and ceramic

Round Rods are nice and easy to cut

Diameter: 127 mm / 5 Inch

Metal and rubber materials are treated with special processes for strong adhesion and long service life

Design: Good elasticity and high tension

5Pcs 5.2mm High Speed Steel Twist Drill Bit with Hex Shank 104mm Length OD 56.1mm to ID 54.1mm and ceramicDescription: 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.