Welded steel construction; 2 support runners; Socket with safety catch; Load surface of waterproof bonded plywood, surface finish screen printed, anti-slip; Powder-coated RAL 5010 gentian blue; Permanent surface protection; Impact- and scratch-resistant; Elastic solid-rubber tyres or polyurethane tyres on cast aluminium wheel rim with precision deepgroove ball bearings; Mounted on a single axle.