
Rotating lockable backing plate compatible with 45mm grinding wheels Heavy-duty round grinding wheel holder made of high quality rubber base and nickel-plated steel shaft. The threaded pad screws securely into the chuck holder and features a threaded hole for quick and easy replacement. Locking wheel holder with a shank diameter of 6.35mm (ie 1/4 inch) for most rotary tools and drills. Practical grinding tool for grinding, polishing, deburring and descaling surfaces on a variety of items. Note: The data is all measured manually, please allow 1-3 cm error due to differences in light and display, there may be color difference, please refer to the actual item received.