The Lenox 6-7/8" Master-Grit Recessed Lighting Hole Saw (30864) is ideal for cutting out holes in ceilings to install recessed lights. The Hole Saw has a hard tungsten Carbide grit that gives the user extended life in tough, abrasive materials. The continuous cutting edge provides a smooth and easy cut and eliminates taring the material. The solid back design collects dust and debris and limits the mess made while sawing.