The Scotty Push Button Locking Mount enables secure installation on flat surfaces or the side of a gunnel or transom. Compatible with all Scotty post mount rod holders, it features the innovative “lock-down” system—simply select your preferred fishing direction and push the rod holder or accessory straight down into the mount for a firm hold. Note that this mount is not compatible with 132 Mounting Rivets but works with 133 Well Nut Mounting Kits. Dimensions are 4” x 2” x 2” with bolting spacing of 1 5/16” x 3 3/16”.