wheel center: polypropylene grey
bearing: central ball bearing
threadguard: large nylon threadguard
galvanized and blue passivated sheet steel housing, pivot bearing with a double ball race, fixing by screw Ø 11 mm, housing with material strength 2.5 mm (fitting) and 2.5 mm (fork),wheel rim made of polypropylene with a tread made of thermoplastic rubber (95 ° Shore A) grey colored, hub width 36 mm, central ball bearing, screwed wheel axle (incl. all axle material).