Set of thermoplastic rubber tyres, stainless steel housing, mounting plate, 4 swivel castors, 2 with double stops, wheel x width 50 x 19 mm. Supplied = assembled. Wheel diameter = 50 mm. Structure = swivel castor, swivel castor with double stop. Scope of delivery = 4 swivel castors, 2 with double stop. Wheel material = rubber - thermoplastic rubber elastomer (TPE) Material of rim = polypropylene. Housing material = stainless steel. Max. load at 4 km/h = 50 kg. Type of mounting = with top plate. Wheel width = 19 mm. Overall height = 70 mm. Wheel bearing = plain bearing. Temperature resistance = -10 C to +70 C. Swivel castor offset = 24 mm. Screw hole diameter = 6 mm. Swivel castor plate dimensions = 60x60 mm. Screw hole spacing = 38x38 - 46x46 mm. Housing surface = stainless steel. Shore hardness = 85 A. Low rolling resistance, smooth running. Non-marking tyres, hardwearing. Temperature resistant from -10 C to +70 C. Hardness 85 3 Shore A. Housing and wheel axles made of rust free stain