Ideal for plumbing, electrical, engineering installation & general building tasks. 5 dry cutting diamond core drills: 38, 52, 65, 117, & 127 mm. 1/2 in. BSP thread on all cores. Cuts clean holes with no breakout. Suitable for use in brickwork & blockwork. Adaptors for use in SDS & 13 mm. drill chucks. 300 mm. extension for cutting through cavities. 38 mm. for overflows & feeds. 52 & 65 mm. for waste pipes. 117 mm. for soil pipes & vents. 127 mm. for extractor vents. In a sturdy wheeled aluminium transport case. Also supplied with a drill drift & a pilot drill. NB. HAMMER OR IMPACT DRILLING ACTION MUST NEVER BE USED WITH DIAMOND CORE BITS.