Check the listing for details. Stern Pad Jumbo Black- 3D Scan Transducer Mounting Kit (No Screwing into Boat). Condition: New. Listed at 44.99 USD. Less than 5 minute install time (18 hours cure time)No screwing into boat hull or using messy epoxiesCan be bottom paintedIncludes: (1) Black Jumbo Stern Pad, (3) Screw-less Cable Clips, & Install kit (Scotch-Brite Pad, alcohol wipe, etc.)The Stern Pad is a mounting block for transducers, LED lights, live-well pumps, battery switches, fuel separators, and other devices that can be attached to a boat transom. The mounting block uses an industrial grade genuine 3M VHB adhesive to adhere to the hull without the use of screws. The adhesive has been rigorously tested and has passed a 10 years submersion test in saltwater! See videos online for strength demonstrations. The Stern Pad Jumbo has twice the hold strength compared to the Stern Pad Standard. It is intended for large 3D scan transducers. Jumbo Dimensions: 6.5" x 4.75" x 1" (with rounded corners)