Diamond Dry Core Drills are designed for intensive dry cutting on brickwork and blockwork. Particularly suitable for plumbers, electricians and other installation engineers, our dri core drills will be invaluable in the construction of flues, air vents and plumbing or electrical channels. Offering a faster rate of cut than TCT alternatives with less pressure required. 300mm saw length on 22 and 28mm diameter saws. 150mm saw length on all other diameters. Dry Dimond Core bodies require the use of an pilot drill.