The Faithfull Porcelain Series Diamond Blades are ideal for cutting ceramic, porcelain, granite, porcelain based paving and marble. Wet cutting is recommended for a longer blade life and dust suppression, but they can also be used dry. The long-lasting, 10mm deep, continuous sintered rim enables fast and clean cuts. All blades have a centre core reinforcement plate that prevents the blade de-tensioning to increase blade life and reduce vibration. Conforms to EN 13236. This Faithfull Porcelain Diamond Blade has the following specification: Disc Diameter: 230mm Bore: 22.23mm Max. rpm: 13,300