Professional holesaw saw with a tough steel body and tungsten carbide tipped teeth which can be re-sharpened for extended life. These holesaws are designed for a fast accurate drilling with minimal heat build-up in machinable material upto 55mm thick. Suitable for cutting solid wood, laminate coated board, plywood, PVC, plasterboard, clay tile, hollow gauged brick and tiles up to a score hardness of 6. For best results use a 90mm or longer pilot drill.