Swivel castor with central, total or directional lock, housing made of pressed steel, bright zinc plated, blue passivated, double ball bearing swivel head, wheel axle riveted for attaching the cover, covering of the housing made of Polypropylene, RAL 9002 grey-white, stem with cam hole for profile bars. Wheel centre made of Polypropylene, Tread: TENTEprene (thermoplastic rubber), grey non-marking, precision ball bearing