Forsun manufactures diamond core bits which arecommonly used in mineral exploration, site investigation and water well drilling. We have impregnated diamond type, surface set type, electroplated diamond type, T.C. type,PCD type andTSP type in following sizes. Welcome to contact us for inquiry. Size Available: Q series: AQ, BQ, NQ, HQ, PQ,BQ3, NQ2, NQ3, HQ3, PQ3... T2 series: T2-46, T2-56, T2-66, T2-76, T2-86, T2-101 T6 series: T6-76, T6-86, T6-101, T6-116, T6-131, T6-146 T6S series: T6S-76, T6S-86, T6S-116, T6S-131, T6S-146 B series: B36, B46, B56, B76, B86, B101, B116, B146 WF series: HWF, PWF, SWF, UWF, ZWF WG series: EWG, AWG, BWG, NWG, HWG WM series: EWM, AWM, BWM WT series: RWT, EWT, AWT, NWT, HWT Others: NMLC, HMLC, LTK48, LTK60,EWK, AWK. Note: Impregnated Diamond Core Bit: Impregnation Depth: 6-12mm; 6mm is "Forsun" standard depth Bit Crown Profiles: "W" profile, "Flat" profile, "Semi-round" profile, "Cross" profile... Surface Set Diamond Core Bit: Bit Crown Profiles: "Semi-round" profile, "Step" profile... Welcome to contact us for more information.