Quality Australian Made J Series Heavy Duty Castors are able to carry up to 300 kg each, the range of heavy duty J Series castors are available in 100 and 125 mm sizes, and in a wide range of wheel types. Easy process to order: 1> Pick wheel type - Blue high resilience elastomer, polyurethane, hard nylon, cast iron 2> Pick Fork Type - Zinc plated Core Coat™ in swivel plate, fixed plate, bolt hole, total brake and direction lock configurations 3> Call Us with above info and quantities Scroll Down to see the many options / combinations.