... 60,66, 75, 91, 110, 130Single-tube Core Bit and Reaming Shell36, 46, 56, 59, 60, 66, 75 ... and Reaming Shell56, 59, 75, 91, 95 DIAMOND BITS AND REAMING SHELLS (INTERNATIONAL STANDARD) Diamond BitBQ, NQ, HQDiamondReaming ShellBQ, NQ, HQ Diamond Drilling ... Bits and Reaming Shells