This is for the 2013 and up Genesis Coupe. These adapters are to be used with 52mm gauges. Allowing them to fit snugly in the stock location once the stock gauges are removed. Most people use electrical tape or other means to hold gauges in, this solves the issue with that and allows them to adapt the gauges of your choice with proper function and great fitment. 1 of these and 2 outer are required for a full set.