Castor Socket Inserts for Square Tube

Square Plastic Castor Pin Sockets or Plastic Square Castor Pin Sockets, Square Plastic Castors Sheaves, Square Castor Adaptors, Square Blind Castor Sockets, Square Open Castor Sockets, Square Castor Fixings and Square Castor Fittings, all designed over the years for various Castors and Wheels.