... ,Φ95 AQ,BQ,BQ3,NQ,HQPQ,PQ3Electroplated diamond core bit description: ModelRegular sizesSuited stratumInternational standardSingle tube electroplated diamond core bit and reaming shellΦ36,Φ46,Φ56 ... diamond core bit reaming shellΦ56,Φ59,Φ75,Φ91,Φ95 AQ,BQ,BQ3,NQ,HQPQ,PQ3 NQ/HQ Impregnated diamond core bit/Electroplated Diamond Core Drill Bit/Surface set diamond core ...