100mm fixed castor made of a zinc plated housing which ensures the castors are robust enough and suitable for a variety of environments. The fixed castors, with the non marking blue rubber wheel, is suitable for trolleys, equipment and general purposes. The non marking blue rubber wheel with roller bearings means the castor is quiet to move, will not mark the floor and will carry significant loads. Fixed castors can be teamed up with swiveling casters and braked castors for maximum control when moving.