Designed for a truck bed corner, this has a lot of other mounting uses. A nice strong mount when bolted into the corner of your truck bed. Has a 1/2" hole that fits a lot of the mobile mounts. If you need a larger 3/4" inch hole like for the regular size NMO mount, this is easy to drill out to the needed size. Comes in a bare metal finish, prime and paint it to color match to your truck. Or leave it as it comes. Add your own screws or bolts (not included). Made from aluminum. The flat sides measure about 5-3/4" long each and they are 1-5/8" wide or tall. About 1/8" thick. Enjoy!