Lenco Electric Limited Space Trim Tab Kits are ideal for boats with a swim platform and/or ladder. They can be fitted to transoms that have a limited mounting area. Blades are 12 gauge - 304 SS with front of blade folded to provide a smooth trailing edge and 1/8" diameter hinge pin. Fast response electric actuators for precise control. All units have Plug and Play connections and are fully submersible. 4" x 12" Electro-Polished Trim Tabs.