Type of Diamond Core Bits: Impregnated Diamond Core Bit; Surface Set Diamond Core Bit; Tungsten Carbide Core Bit; PDC Bit; TSP(Geocube)Diamond Core Bit; Electroplated Diamond Core Bit Dimension of Core Bits: A-Gauge Core Bits: AQ, AQ-RSG,AWG(AX), AWM, AWT, LTK48 B-Gauge Core Bits: BQ, BQ-RSG, BQ-2.400, BQ3, BWG(BX), BWM, BWT, LTK60, TBW N-Gauge Core Bits:NQ, NQ-RSG, NQ-3.032, NQ2, NQ2-RSG, NQ3/NQTT, NQ3-RSG, NQ3-3.032, NMLC, NWG(NX), NWM, NWT, TNW, H-Gauge Core Bits:HQ,HQ-RSG,HQ-3.830, HQ-3.895, HQ3/HQTT,HQ3-RSG,HQ3-3.895,HMLC, HWF-Long,HWF-Short, HWG(HX),HWT P-Gauge Core Bits:PQ, PQ3,PWF-Long,PWF-Short S-Gague Core Bits:SWF-Long, SWF-Short U-Gague Core Bits: UWF-Long, UWF-Short Z-Gauge Core Bits: ZWF-Long, ZWF-Short T,TT, T2&TB Series Metric Core Bits: T36, TT46, T2-46, TB56, TT56,T2-66,T2-76, T2-76Coreline, T2-86, T2-86Coreline, T2-101, T2-101Coreline T6 Series Metric Core Bits:T6-76, T6-86, T6-101, T6-116, T6-131, T6-146 T6S Series Metric Core Bits: T6S-76, T6S-86, T6S-101, T6S-116,T6S-131, T6S0146 B Series(IS03552-1)Metric Core Bits:B36, B46, B56, B66, B76, B86, B101, B116, B131, B146