The first caster in the history of the industry to be specifically designed for laundries. Our proprietary patented thread guard design, has been rigorously tested and will clearly outperform your expectations in minimizing lint & thread pick up GUARANTEED! A real time saver! - Our NEW 5" tapered polyurethane wheel creates less floor friction and therefore less material build up on the wheel. - Our heavy duty case hardened steel yoke incorporates a sealed bearing raceway that minimizes dirt contamination and will out perform them all in both performance and durability. - Our NEW Dual Sealed Precision bearing system is the best yet for smooth rolling and high performance for years to come.