wheel center: polypropylene grey
bearing: central ball bearing
threadguard: large nylon threadguard
galvanized and blue passivated sheet steel housing, screwing by plate with hole pattern 48/38 x 48/38 mm, housing with material strength 1.5 mm (fitting) and 1.5 mm (fork), clearance between the fork 28 mm, wheel rim made of polypropylene with a tread made of thermoplastic rubber (95 ° Shore A) grey colored, hub width 28 mm, central ball bearing, screwed wheel axle (incl. all axle material).