Starrett tungsten carbide tipped fastcut multi-purpose hole saw. Power through wood, MDF, plastics, plasterboard and ceramic wall tiles up to five times faster than a bi-metal hole saws. Carbide tipped teeth for outstanding cutting performance and product durability. Smooth cut with minimal heat build up. Suitable for use in mains and battery powered tools. Multiple uses - cut wood, MDF, plastics, ceramic wall tiles and building bricks. 2-1/8-inches cutting depth. Special arbors featuring extended length pilot drills are available. Comes with 4 carbide tips.