611-4458 RS compatible RHD Medium Duty Leveling Footmaster Casters are unique in their function allowing movement on a swivel castor and positioning on an anti vibration rubber pad by a Handwheel adjustment. With a die cast aluminum body these sturdy multifunctional castors can take a load of 500kg when stationery on the rubber pad and 250kg when moving on the castor wheel. Attachment to machinery and equipment is by a forged steel top plate. Footmaster Leveling Casters 102-117mm 250kg Load Capacity