High Hardness Hard Rock Drill Bits , Rock Carbide Drill Bits With Good Wear Resistance Feature Of Tapered Chisel Bits (1) Taper angle: 4°,4°46″,6°,7°...
Sharper with high hardness for easily locating and cutting Center Drills/Spotting drills Solid Carbide NC Sporting Drill / Center drill bit Speciafica...