Welded steel construction; With 2 innovative plastic safety handles; Bended transverse struts; Chair support with antislip covering; Removable; With continuous height adjustment; Length: 505 mm; Powder-coated RAL 5010 gentian blue; Permanent surface protection; Impact- and scratch-resistant; Pneumatic tyres on steel wheel rim or solid-rubber tyres on special plastic wheel rim with precision deepgroove ball bearings and plastic wheel cap.