Dimensions: The glass cutting disc is 4 inches (100 mm) in diameter. Mandrel hole is 4/5 in (20 mm), reducer washer is 5/8 in (16 mm), 1.4 mm thick. Install And Use Easily: This tile cutting disc fits angle grinders and marble machines, which arbor hole is 4/5in. Tips: it can be used for dry or wet cutting. Upgraded advance materials：1mm ultra-thin glass cutting blade is made of diamond high manganese steel matrix, new brazing process, upgraded and improved blade, strong and not easy to burst, heat-resistant，high safety and longer service life. Wide Applications: The tile cutting disc is compatible with all 4-inch (Model 100) angle grinders for smooth cutting, chamfering, and grinding of glass, jade, crystal, wine bottles, ceramics, ceramic tile, and other materials. Precise Cuts, Smooth Surfaces ： Ultra-thin blades ensure accurate, smooth cuts and uniform abrasive force, reducing noise and dust and providing a safer, cleaner work environment. Package Includes:5 Glass Cutting Blades.5 Reducing Washers 5 Pack Glass Cutting Disc for Angle Grinder, Tile Cutter Blade, Ultra-Thin Glass Cutters Tools for Grinding Ceramic, Crystal, Tile, Jade, Wine Bottle.