Carbide Scoring Wheel 10mm (7/16in) - RUBI Tiling Tools 1950, RUBI is the brand of the tiling tool.The 1950 Carbide Scoring Wheel has an 18mm (3/4in) diameter.It features a durable carbide wheel designed for precise tile cutting.This tool is typically used for scoring and snapping ceramic or porcelain tiles. RUBI Tiling Tools 1950 Carbide Scoring Wheel 18mm (3/4in)