The contact wheel is 300mm (12”) in diameter and 50mm (1.97”) wide.
Bore of the bearings is 1/2".
Mounting bolt included.
The core is made from industrial grade aluminum 6061 with 75A duro industrial grade PU rubber coating. The industrial grade PU rubber it has 3 times more lifespan than the natural vulcanized rubber and is ideal for such kind of applications.