STERN SAVER Prevents costly repairs associated with transom rot and water-logged foam cores! Forms a super strong mechanical bond to your boat. No tools necessary, pre-packed with everything you will need for installation. Installs in ten minutes or less. Can be drilled and re-drilled multiple times. The toughest, most durable transducer mounting system available. Fabricated from marine grade polyethylene plastic, not injection molded low-grade plastic.