We offer impregnated diamond bits, surface-set diamond bit,electroplated diamond bit and tungsten carbide diamond bit,Our standard working layer of diamond bit is 6mm,working layer can also be 9mm, 10mm, 12mm;  we have different Matrix hardness selection in drilling different rocks from soft, medium, hard, very hard and ultra hard; dimensions of diamond bit we offer include AQ, AWM, AWT, AWG, BQ, BWM, BWT, TBW, NQ, NMLC, NWM,NWT, NWG, TNW,HQ,PQ...