The Lenox Tools 30864678RL Master Grit Recessed Lighting Hole Saw 6-7/8-Inch 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 provised 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. This hole saw works perfectly with recessed lights made by Capri, Hubbell, Lightolier, Lithonia, Marco, Prescolite, and Progress.