
Aq Impregnated Core Drill Bits Portable Drill Rig for Tunnel Exploration. 15mm Standard Matrix: DCDMA-standard 15mm height delivers 25-30% more drilling footage than industry average. Extended Lifespan: Unique vacuum sintering and premium synthetic diamond significantly reduce replacement frequency. Optimized Water Flow: Evenly spaced outlets and curved channels improve drainage, cooling, and cuttings flushing. Full Strata Coverage: 6 matrix series (H3-H13) cover soft to ultra-hard rocks, eliminating bit switching needs. Wide Size Range: Available in AQ, BQ, NQ, HQ, PQ, SQ, T2, TT, T6, B, MLC, LTK, WF, TW, WT, WG, WM, AX, BX, NX, HX, and Chinese standards. Customization Options: Supports custom crown height, water outlets, diameter, matrix, label, and logo. Fast Delivery: 3-7 days for standard products; 20-25 days for custom; urgent orders ship within 3 days.