Heavy weight capability and Durability made the wheel casters like the VXB005150CF a must use, get your do it yourself object move around. The wheel diameter is 150mm or 5.906" inch in inches. Dimensions of the caster wheel is 50mm (1.969" inch). Overall height of the wheel caster is 193mm = 7.598" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 100mm x 115mm and holes distance of 75mm x 85mm. The weehl core material is Cast iron and has a Cast iron tire with a low friction Roller bearing. Each caster will carry the load of 617 lb and is Fixed type. Temperature range is -40 to 180 F. Very important notice, you need to buy the VXB005150CF in order to get one :).