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, bolt hole fitting by bolt hole individual, housing with material strength 2.5 mm (fitting) and 2.5 mm (fork), clearance between the fork individual, wheel rim made of polypropylene with a tread made of thermoplastic rubber (95 ° Shore A) grey colored, hub width 40 mm, central ball bearing, screwed wheel axle (incl. all axle material).