wheel center: nylon black
bearing: roller bearing (stainless)
stainless steel housing (AISI 304), pivot bearing with a double ball race, bolt hole fitting by bolt hole Ø 13 mm, housing with material strength 2.5 mm (fitting) and 2.0 mm (fork), clearance between the fork 42 mm, wheel rim made of nylon with a tread made of vulcanized elastic tyre (approx. 65° Shore A) grey colored, hub width 40 mm, stainless steel roller bearing, screwed wheel axle (incl. all axle material).