This auction is for 1 faria RPM gauge with hour meter. comes with mounting bracket. It has a 3 1/4" cutout and is 2 1/2" deep. can be used on 4,6 and 8 cylinders. the part # is TCH287A . It is greyish in color and has black writing and an orange needle. Thanks for looking and please check in my ebay store for more marine items.