Specifications Skin inpregnated drillbits are suitable for drilling in mediumhard rock formation with F=6-10 Inpregnated drillbits are suitable for drilling in the broken rock formation with F=8-12, and soft hard, high dense, stro...
?1. High speed steel m-3 bi-metal edge welded to alloy seel back for heavy duty cutting 2. Veriable teeth 4/6tpi teeth 3. Outting safely and efficiently, the best way to cut large holes 4. Clearing the chips in touch materials 5. ...