Drilax&trade; 5 Pcs Diamond Drill Bit Set 3/4", 1", 1 1/4", 1 3/8", 1 1/2" - Wet Cutting Tiles, Glass, Fish Tanks, Marble, Granite, Ceramic, Porcelain, Bottles, Quartz, Lot 5 Diamond Coated Hole Saws- Kitchen, Bathroom, Shower, Faucet PREMIUM QUALITY, LONG LASTING, TALL (DEEPER CUTS) Diamond Hole Saw Drill Bit Tool Set in Elegant PU Zipper Storage Case. High Density Poly Insert Included. You can use it as a guide to keep the hole saw in position. SAVE OVER 80 Percent on MOST POPULAR 5 Sizes: 3/4 inch, 1 inch, 1 1/4 inch, 1 3/8 inch, 1 1/2 inch. Having these sizes available will help you cover almost all of your applications. SPECIAL FEATURE : INCREASED DEPTH of CUT. These hole saws are 30 Percent TALLER (deeper) than most competitors. You can drill through thicker materials with our tools. 1 3/8 inch countertops are no problem. EXCELLENT RESULTS in Granite, Ceramic and Porcelain Tiles, Glass, Marble, Slate, and many types of Stones. Shank size is 3/8 inch for common drills (corded electric, cordless rechargeable, upright, other rotary tools) DRILAX BUILT QUALITY. WE ARE HERE TO HELP. Shank sizes vary, maximum shank is 3/8 inch, suitable for all common electric drillers.