These castoring wheels feature high quality, solid, resilient rubber tyres 75mm in diameter. The mounting plate has 4 screw holes for fixing to a base or leg. The dimension from the top of the mounting plate to the axle centre is 63mm, making the total height approximately 100mm. These castoring wheels swivel freely giving you complete manoeuvrability. The foot-operated brake prevents the wheel from rotating and locks the castoring motion at the same time. These are universally useful items with applications in all sorts of areas, not just for moving machinery around. Recommended maximum load per wheel is 50kg.