Injection polyurethane tread; polyammide 6 centre.
Plain bearing bore
The plain bearing bore results from a hole in the material forming the centre of the wheel and contains the axle.
Axle composed of ground steel bush with bolt and nut.
Swivel bracket with stem and front lock
Swivel bracket with stem. The plate, the ball rice ring and the fork are made of pressed steel zinc plated finish; swivel actions: double ball greased race, with dust protection granted by the particular plate configuration. The king pin is obtained by moulding and duly rivetted. The front bracke is necessary to lock wheel and top plate rotation.