Standard rubber wheels are made from rubber that is natural and extracted from trees. All of Atlas Handling uk standard rubber wheels are made from Virgin rubber i.e not reconstituted rubber. Rubber tyre wheels are mounted on either steel centres or plastic centres, the latter being lighter than the stronger hub of the metal centred wheel. Rubber helps to protect the floor from being damaged and the Grey version will not leave black scuff marks on the floor. Rubber castors and wheels also have the advantage of being quiet running and are used in a lot of applications where noise can be disturbing.