Faithfull FAITLC300 Wall and Floor Tile Cutter 300mm (12in) square, 210mm diagonal, 10mm thick cutting capacity. "A dual rail push action Tile Cutter with a Tungsten Carbide cutting wheel ideal for most types of tiles. It will cut tiles up to 300mm square, 10mm thick and can accommodate diagonal cuts up to 210mm. This cutter features a solid chromed dual rail with a ball bearing sliding handle for a consistent and smooth cutting action Rubber bump stops, graduated angle guide, and rubber feet provide a non-slip contact point. Faithfull 5 Year Manufacturers Guarantee "How to use: Position the tile on the cutter, with the line of cut on central ridge. Score once only the whole length of the tile using even pressure pushing forward. To snap the tile, ensure wheel is clear of tile edge and bring handle down firmly."