Factory price 56mm 98mm 146mm 152 mm oil drilling tools diamond pdc drill bitUsed in geological exploration drilling holes, gas drainage hole, grouting hole drilling, suitable for easy soft rock and medium hard rock.Available sizes :50mm, 56mm, 60mm, 65mm, 75mm, 94mm, 98mm, 113mm, 120mm, 120.5mm, 124mm, 143mm, 149mm, 152mm, 173mm, 190.5mm, 203mm, 254mm.Wireline core bit : A gauge, B guage, N gauge, H gauge , P gauge.1.Suitable for soft, medium and hard formations.2.Super strong material promotes gauge wear resistance to provide long bit life.3.The cutter's back rake has been unique design, reducing the bit torque and increasing aggressiveness.4.Cuttings removal and bit cooling for bits are optimized by matching the volume of rock removed by the cutter on each blade with the proportional fluid flow.Non-coring PDC drill bit uses PDC as main cutting components, with the excellent wear-ability and impact toughness of the PDC. It has a useful life, high-efficiency, and good performance cost ratio.