Surface set diamond core bits 1. Q Series: AQ,BQ,NQ,HQ,PQ 2. T2 Series: T2 46,T2 56,T2 66,T2 76 Surface set diamond core bits can be used with any type of core barrels. By varying the diamond grade,size,quality,and matrix hardness and crown shapes,the users can satisfactorily drill and core hard and homogenerous formations. To avoid excessive matrix wear at the leading edge of each segment,tungsten carbide inserts are fitted on each side of the waterway. This kind of bits cannot be used in broken or loose formatioSize Available:Q Series: AQ,BQ,NQ,HQ,PQ/AQTK,BQTK,BQ3,NQ2,NQ3,NQTT,HQ3,HQTT,PQ3,PQTTT2 Series: T2 46,T2 56,T2 66,T2 76,T2 86,T2 101T6 Series: T6 76,T6 86,T6 101,T6 116,T6 131,T6 146, T6S 101T Series:  T36,T46,T56,T66,T76,T86Z Series:  Z46,Z56,Z66,Z76,Z86,Z101,Z116,Z131,Z146B Series:  B36,B46,B56,B66,B76,B86,B101,B116,B131,B146WF Series: HWF,PWF,SWF,UWF,ZWFWT Series: RWT,EWT,AWT,BWT,NWT,HWTWM Series: EWM,AWM,BWM,NWMWG Series: EWG,AWG,BWG,NWG,HWGOthers:   NMLC,HMLC,LTK48,LTK60,BGM,NGM,ADBG,TBW,TNW,ATW,BTW,NTW,NXD3,AX,NX,NXC,AXT,T6H,4 9/16,NWD4,412F,SK6L146,TT46,TB56,TS116,CHD101

Non-standard also can be made as your demand /drawings.