TUNGSTEN CARB TIP HOLE SAW 7/8 IN (22mm) PK/1 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 2-1/8-inches cutting depth