... TC reamers, impregnated reamers, adaptor reamers, backend reamers. Reamer is set with natural or synthetic diamond, and it ... as a stabilizer for drill bit.Size Available:"Q" Series: AQ,BQ,NQ,HQ,PQ (Front end & Back ... AWT,BWT,NWT,HWT (Single Tube/Double Tube)WG Series: EWG,AWG,BWG,NWG,HWG (Single Tube/Double ... Tube)WM Series: EWM,AWM,BWM,NWMT2/T6 Series: T256,T266,T276,T286,T2101/ ...