Mounting the 8inch-Lock-Swivel-Caster-006 Wheel Caster can make your life easier, push or pull your new project on wheels. Diameter of the caster wheel is a metric standard 200mm that is equal to 7.874" inch with imperial units. Dimensions of the caster wheel is 50mm (1.969" inch). The caster dimensions heightwise is 240mm/9.449" 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. Low drag was achieved by a Polypropylene core and Thermoplastic Rubber core on a Polypropylene core and Thermoplastic Rubber tire spinning freely with a Double ball beaing. Each caster will carry the load of 661 lb and is Swivel and Center Locking type. Last and not least the temperature range = -40 to 180 F. Enjoy our 8inch-Lock-Swivel-Caster-006, we wish all the best in your project.