Casing: Made of compressed steel sheet; · Steering roller casing with heavy gabl and base plate · With very stable center bolts screwed and secured · With double ball bearing in turntable · In addition, enhanced by the installation of four specially designed, hardened bearing shells, as a result especially insensitive to shocks and impacts · Axle screwed together · Zinc plated - chromated Wheels: tread: made of Polyurethane Blickle Soft Hane ® · Hard up shot · Colour: green · No track · Very high driving comfort thanks especially thick elastic tread · 75° Shore A · Resistant to abrasion · High cutting - and High tear strength · No discolouration on contact · Protects ground · Low operating noise · Low rolling resistance · excellent chemical connection with the wheel bodies · Wheel body: made of die-cast aluminum · Corrosion-resistant · With ball bearing · Color aluminum.This text is machine translated.