Medium Duty Leveling Footmaster Castors 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 50kg when stationery on the rubber pad and 25kg when moving on the castor wheel. Attachment to machinery and equipment is by an M8 threaded stem. 42mm Footmaster Stem Fitting Levelling Castor 25kg Load Capacity