Heavy weight capability and Durability made the wheel casters like the VXB004100BTPRB a must use, get your do it yourself object move around. The wheel diameter is 100mm or 3.937" inch in inches. The wheel has a width of 30mm=1.181" inch. Overall height of the wheel caster is 130mm = 5.118" inch. This wheel caster can be mounted using a Top Plate with the dimensions of 93mm x 62mm and holes distance of 45mm x 72mm. The Double ball bearing design will enable the Thermoplastic Rubber tire to roll easily with a core made of Thermoplastic Rubber. Each caster will carry the load of 198 lb and is Swivel and Upper Brake type. The caster temperature range = -40 to 180 F. Very important notice, you need to buy the VXB004100BTPRB in order to get one :).