Description:Bit diameter: M3X1

5, M4X1

5, M5X1

5, M6X1

5, M8X1

5, M10X1

5

High-speed steel with coating treatment, tougher and more abrasion resistant for longer working life and high work efficiency

Twist design drill bits, accurate and fine, increase drilling speed

Mainly for drilling wood, plastic, fiberglass, printed circuit board, and metal including copper, aluminum, tool steel, cast iron, and heavy-duty abrasive alloy metal, etc

for home DIY, building and engineering use etc

Specification:Material: High speed steelPackage Includes:6 Pieces Drill Bits Set