The RUBI 22mm SILVER Scoring Wheel (7/8") is a replacement scoring wheel designed specifically for RUBI TP and TQ series manual tile cutters. Made from sintered tungsten carbide, it offers high wear resistance and reliable performance when scoring ceramic tiles, glazed stoneware, rustic stoneware, and porcelain stoneware with smooth or slightly rough surfaces. This scoring wheel is engineered for precision and durability, featuring a triple-grooved shaft design (a RUBI patent) that ensures secure mounting, firm contact, and vibration-free operation. It delivers clean, consistent scoring lines for accurate tile breaks, especially on materials with low to medium cutting difficulty.