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Pilot Drill Replacement for CGS Range Core Drill for Granite Porcelain & Polymer

Suitable for cutting hard porcelain and granite bench tops. Use water to cool diamonds and remove waste material from the cut. Use also for coring polymer concrete and plastic/glass cable jointing pits. Avoid overheating diamond segment by quenching in water. NOTE: Diameters up to 29mm are fitted with 12mm HEX shank and carbide pilot drill, diameters from 32mm drills are fitted with 1/2” BSP female threads and are supplied with a 12mm HEX shank spindle, A taper pilot bit together with a wedge key. All core drills have an internal depth of 50mm.