TCT HOLE SAW 

Its a professional Extra Long Life dry-drilling bit from the DRYGRES PREMIUM range, available in 12 sizes from 10mm to 85mm with a direct M14 connection. Designed for drilling through ceramic tiles, porcelain stoneware, marble and granite without water cooling, the DRYGRES PREMIUM delivers a maximum speed of 14,000rpm and a maximum drilling depth of 30mm or 38mm depending on size. Its Extra Long Life classification makes it the preferred choice for professional tilers, plumbers and contractors who regularly drill hard porcelain, ceramic and stone materials and require a durable, high-performance dry-drilling solution