You can sharpen various materials, whether steel, ceramic, or carbide. Suitable for Tormek T-8, Tormek T-7, and earlier models with a stone diameter of 250 mm. Each diamond wheel comes with 150 ml of ACC-150 rust protection concentrate. Always add the concentrate to the water when wet grinding to prevent rusting of the grinding wheel. Add 10 ml of concentrate for every 250 ml of water (approximately 4%).