The Bennett 129 Trim Tab Kit 12” x 9” w/o Control is built to last and proven to offer years of maintenance-free service. Improve lift and stability, using the power of hydraulics for greater performance, precision and durability. Get up on plane faster, reduce fuel consumption and eliminate listing. There are no electric motors underwater to cause premature failure. Instead, the hydraulic pump is housed inside the boat in a secure, dry environment. No hoses or wires exposed to the elements. The Bennett 129 Trim Tab Kit is standard 12 volt with two thru-transom actuators, two stainless steel trim tabs, a hydraulic power unit, all necessary wiring, tubing, hardware, and installation instructions.