RWL WHEELS and the W4 Line RWL wheels and the W4 Line belong to a range of special GRIT products designed for polishing, lapping and buffing. The special composition of these wheels guarantees extraordinary efficiency and durability. Originally designed to substitute cotton wheels for finishing operations, they are actually more efficient and long-wearing than normal airy wheels and sized cotton discs. They don't leave trimmings or lint during use; they don’t dirty the workplace and, more importantly, they are flexible, soft and available in the most common finishing dimensions. They can also be used with appropriate abrasive pastes for a better surface finishing of metals.