wheel center: nylon white
bearing: roller bearing
threadguard: small metal threadguard
galvanized sheet steel housing, screwing by plate with hole pattern 80/77 x 60 mm, housing with material strength 4.0 mm (fitting) and 4.0 mm (fork), clearance between the fork 42 mm, wheel rim made of nylon incl. an injected steel tube with a tread made of nylon white colored, hub width 40 mm, roller bearing, screwed wheel axle (incl. all axle material).