The locking mechanism is activated through the cam via a lever. The lever reverses automatically to the base position. Cam bore parallel to the long side of plate, SW 11 mmSwivel castor with central total lock, housing made of pressed steel, bright zinc plated, blue passivated, double ball bearing swivel head, wheel axle with nut, dustguard, plate fitting with integrated central lock. Wheel centre made of Polypropylene, Tread: solid rubber, black, with synthetic plain bearing Hint: The brake pedal is attached to the mounting plate. The swivel mechanism is independent of the mounting plate. Therefore the break pedal is always in the same position. , Technical Data - TENTE Swivel Castors with central , total lock: Wheel diameter 200 mm, Width of Tread 50 mm, Size of Plate 137 x 105 mm, Plate hole centres 105 x 80/75 mm, Plate hole 11 mm, Offset 55 mm, Overall height 240 mm, Load capacity 205 kg, Load capacity (static) 410 kg - TENTE Swivel Castors with central , total lock 3476PXU200P69 L0-11