Fixed castor with central lock, Fork made of Stainless Steel, wheel axle with nut. The locking mechanism is activated through the cam via a lever. The lever reverses automatically to the base position. Cam bore perpendicular to the long side of plate, SW 13 mm, plate fitting with integrated central lock. Wheel centre made of Polyamide, Tread: elastic-tyre, non-marking, with small threadguards, precision ball bearing, sealed