Quality Australian Made A Series Very Heavy Duty Castors are able to carry up to 3500 kg each, the range of heavy duty A Series castors are available in 200 and 250 mm sizes with polyurethane on cast iron. Easy process to order: 1> Pick wheel type - Polyurethane on cast iron 2> Pick Fork Type - Zinc plated Core Coat™ in swivel plate, fixed plate, wheel brake and direction lock configurations 3> Call Us with above info and quantities Scroll Down to see the many options / combinations.