wheel center: nylon black
bearing: double ball bearing
threadguard: small nylon threadguard
galvanized sheet steel housing, screwing by plate with hole pattern 105 x 84/76 mm, housing with material strength 3.0 mm (fitting) and 3.0 mm (fork), clearance between the fork 60 mm, wheel rim made of nylon with a tread made of vulcanized elastic tyre (approx. 65° Shore A) blue colored, hub width 59 mm, double ball bearing, screwed wheel axle (incl. all axle material).