These clear, high-impact acrylic CRL Quick Draw Mirror Outlet Cut-Out Templates were designed to simplify drilling cut-outs in glass and mirror. The non-skid bumpers adhered on the underside prevent slippage and scratches. Layout of switch plate and outlets is now easier than ever. Just draw and drill, it's that simple! The hole in the corner lets you hang the Templates in a convenient location near the cutting table. Select one of the three templates in the set when drilling for switch, designer, duplex, TV cable, telephone cable, thermostat, more. Measure 4-1/4" x 4-1/4" (108 x 108 mm), 4-1/4" x 6-1/4" (108 x 159 mm), and 4-1/4" x 8-1/4" (108 x 209 mm). One set of three templates per package.