Need a tough, reliable cutting disc for your tile or stone projects? This DT-DIATOOL diamond disc is a great pick. It's 7 inches (175mm) in diameter with a 10mm diamond segment height and a 1.6mm thickness. The bore is 25.4mm (1 inch) and it includes a reducer washer for 22.23mm (7/8 inch) arbors. The cool X Mesh turbo rim design helps keep things cool and clears dust away, giving you smoother, faster cuts. The steel core is reinforced for extra stability, so you get nice straight lines. You can use it dry or wet for cutting porcelain tiles, marble, ceramic, granite – all the hard materials. The stiffening flange in the center adds rigidity. Basically, it's a durable, efficient disc that'll make your DIY or professional jobs a whole lot easier.