wheel center: polypropylene white
bearing: roller bearing
threadguard: small metal threadguard
galvanized sheet steel housing, pivot bearing with a double ball race, screwing by plate with hole pattern 105 x 84/76 mm, housing with material strength 4.0 mm (fitting) and 3.0 mm (fork), clearance between the fork 52 mm, wheel rim made of polypropylene incl. an injected steel tube with a tread made of polypropylene white colored, hub width 50 mm, roller bearing, screwed wheel axle (incl. all axle material).