GreatNeck HC7C 7-in-1 Hole Saw (3/4-Inch Deep)Part # HC7C The GreatNeck 7 in 1 Hole Saw features 3 4 inch deep cutting blades and a 1 4 inch arbor that allows for cutting through wood, pressed wood and plastic. Diameter Sizes: 1, 1 1 4, 1 1 2, 1 3 4, 2, 2 1 4 and 2 1 2 Inch Built in Blade Selector and Slug Ejector Tempered Steel Blades For Cutting Through Wood, Pressed Wood and Plastic Limited Lifetime Warranty Compatible with Drill Drivers Only