According to international standard and design which have favorable capability of drill hole and long use life. Match with electrical drill in good condition.

For Drilling in granite, concrete, stone, masonry, tiles and marble.

Match power tools machines: Bosch, AEG, Hilti, Hitachi, Makita etc.

Material: 40cr steel, YG8C carbide.

Surface finish: sand blast

Dia: 4-40mm depend different styles.

Length:110-1000mm depend different styles.

Packing: pvc bag/clear plastic tube/plastic hanger etc.