These nylon castoring wheels are 50mm diameter, mounted on heavy-duty zinc plated steel frame. Four holes in each baseplate allow for a solid fixing using either screws or bolts. The solid nylon wheel has less rolling resistance and a greater load carrying capacity compared to a rubber tyred wheel, but can be a little noisier as there is no cushioning effect. Each wheel has a foot-operated brake. Use these wheels to turn static items into mobile ones, creating more space in your workshop. Load capacity per wheel is 50kg.