Welded steel heavy duty swivel castor with 'stop-top' brake, Heavy duty wheel with elastic solid rubber tyres ‘Blickle EasyRoll’, with nylon wheel centreBracket: Sturdy welded steel construction, with double ball bearing in the swivel head, additionally reinforced by the integration of four specially shaped and hardened bearing seats, swivel head seal with labyrinth design, fitted grease nipple, bolted and secured with a welded very strong central kingpin. Bolted wheel axle. Zinc-plated, blue-passivated, Cr6-free.Wheels: Tyre & running tread: Made of high-quality elastic solid rubber in smooth rolling quality “Blickle EasyRoll”. Color: black, Shore: 65° Shore AChemical resistance to many aggressive substances, except oils. Operating temperature: -25° C to +80° C, temporarily up to +100° C. At ambient temperatures above +60° C the load capacity is reduced.