5Pcs 4.5mm High Speed Steel Twist Drill Bit with Hex Shank 97mm Length 8mmx10mm The base of the connector

The base of the connector has screw mounting holes

Made of polished 304 stainless steel

end types of pipe and fitting

Size: 610x335mm / 24x13

5Pcs 4.5mm High Speed Steel Twist Drill Bit with Hex Shank 97mm Length 8mmx10mm The base of the connectorDescription: 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.