3/8 Shank

Diamond Drill Bit Hole Saw Set Guide Included 10 Pieces 1/4, 3/8, 1/2 (0.5 Inch), 3/4, 1, 1 1/4, 1 3/8, 1 1/2, 1 3/4, 2 inches Kitchen Bath Faucet Drilling Ceramic Porcelain Tiles Glass Granite Quartz