Scotty #2027 Stanchion Rail Mount for Downriggers Quickly mount a downrigger to your boats' railing stanchion Stainless steel mounting knobs for easy mounting and ultimate portability No need to drill holes to permanently mount fixtures Compatible with all Scotty downriggers, except Laketrollers Dimensions (top plate): 6" x 6" x 6"; Bolting Dimensions (side plate): 2" x 4"