This 80mm diameter medium duty swivel castors with a solid black rubber wheel, has the added durability of having a zinc plated metal centred wheel. These swivel castors, have a square top plate for easy attachment, and can be teamed up with our M8 bolts and nuts to attach to your application. These swivel castors are ideal for a variety of applications, and you can choose from swivel castors, or mix with either Fixed of Braked Castors. 80mm Swivel Castors with a Black Rubber Wheel with a Metal Centre