... to a minimum for mineral exploration. Size Available: 1. A-Gauge Core Bits: AQ, AQ-RSG, AWG(AX), AWM, AWT, ... LTK482. B-Gauge Core Bits: BQ, BQ-RSG, BQ-2.400, BQ3, BWG ... (BX), BWM, BWT, LTK60, TBW3. N-Gauge Core Bits: NQ, NQ-3.032, NQ2, NQ2-RSG, ... Bits: SWF-Long, SWF-Short7. U- Gauge Core Bits: UWF-Long, UWF-Short8. Z- Gauge Core Bits: ZWF-Long, ZWF-Short9. T ...