Copied from a 19th Century original Howard and Sons Ltd with stamp. Originally copied to replace a missing castor from a Howard chair.

Plate Diameter : 1 5/16″  (34mm)

Wheel Diameter : 1 1/4″ (33mm)

Collar fits around castor plate but is for a square furniture leg. Square dimensions are 1 5/16″ X 1 5/16″ (34mm X34mm)