Core Bits for Marble, Glass, and Porcelain Alpha® introduces the Wet Diamond Electroplated Drill Bits for drilling holes in tile and stone for pre-installation or post-installation placement. These bits work great on marble, granite, engineered stone, ceramic, porcelain and glass tile and panels. They can be used on a standard 3/8" or larger drill but also fit on water-fed polishers with 5/8"-11 spindles using the Drill bit Adapter. They are available in 3/16", 1/4", 5/16", 3/8", 1/2", 1-3/8" and 1-1/2" sizes and are ideal for drilling holes for anchors for bathroom fixtures, faucet and plumbing pipes. Electroplated drill bits are a must-have for the tile installer's tool box. Designed for Drilling Holes in Tile and Stone for Pre-Installation or Post-Installation Placement Works Great On Marble, Granite, Engineered Stone, Ceramic, Porcelain and Glass Tile and Panels Can Be Used On A Standard 3/8" or Larger Drill Can Fit On Water-Fed Polishers with 5/8"-11 Spindles Using The Drill Bit Adapter Ideal for Drilling Holes for Anchors for Bathroom Fixtures, Faucet and Plumbing Pipes Available in 3/16", 1/4", 5/16", 3/8", 1/2", 1-3/8" and 1-1/2" Sizes A Must-Have for The Tile Installer's Tool Box Part No. Size Maximum RPM Type Description CH7205 3/16" 3,500 3/8" Shank Electroplated Drill Bit CH7206 1/4" 3,500 3/8" Shank Electroplated Drill Bit CH7208 5/16" 3,500 3/8" Shank Electroplated Drill Bit CH7210 3/8" 3,500 3/8" Shank Electroplated Drill Bit CH7212 1/2" 3,500 3/8" Shank Electroplated Drill Bit CH7235 1-3/8" 3,500 3/8" Shank Electroplated Drill Bit CH7240 1-1/2" 3,500 3/8" Shank Electroplated Drill Bit CH1058 Adapter 10mm to 5/8" (for polishers)
