Thousands of different kinds using our Canada based business to select from to have your office Desk/chair sliding easily right and left, install the VXB016PH160. Dia. Measured of the caster wheel in metric standard 160mm which is equal to 6.299" inch with imperial units. The thickness of the wheel is 40mm or 1.575" inch. The caster dimensions heightwise is 240mm/9.449" inch. This wheel mounting is with the dimensions of 100mm x 115mm and holes distance of 75mm x 85mm. This caster wheel core made of Rubber and Polypropylene core and has a Rubber and Polypropylene core tire spinning over Roller bearing. Having in mind that every caster wheel has the load capacity of 287 lb with a Fixed type. Ambient temperature range is -40 to 180 F. FYI, you will need to buy the VXB016PH160 in order to get one :).