The Scotty 1023 Mounting Bracket is designed for all Scotty Tilt-Up Downriggers. This bracket enables the downrigger to be tilted up and locked in an upright position. NOTE: Does not work with the 1050, 1050MP, or 1060 Compact Downriggers. DimensionsBracket: 2-1/2" x 4-1/2"Bolting: 1-5/8" x 3-3/4" Doesn't work with 1050, 1050MP, or 1060 Compact Downriggers Bracket measures 2-1/2" x 4-1/2" | 1023 Tilt-Up Mounting Bracket