Super Strong Dual-Actuator Trim Tabs built for demanding commercial and sport applications.Super Strong Trim Tabs are built extra-rugged for sport fishing, large cruising andcommercial boats. Blades are made of heavy-duty, 7-gauge (4.6mm) 304 stainless steel.Hinges rotate on an extra-strong 3/8" diameter hinge pin. Robust construction includeshigh-impact upper mounting brackets with mechanical gland cable seal and welded-onstainless steel lower brackets. Stainless steel mounting hardware includes beefystainless steel 5/16" upper and 3/8" lower mounting bolts. Trim tab planes come with a3 3/4" diameter sacrificial anode installed. The completely flat blade design reducesspray and produces a clean, dry ride. A minimum transom height of 11" is required for installation.About the actuatorsLenco electric actuators are built around a proven-dependable ball screw design that is twice as powerful as comparable hydraulic models. More power is complemented by an instant response to helm commands, which means you can correct your boat's trim angle much faster than with hydraulic designs. Actuators are (of course) fully submirsible, with a sealed design and "plug and play" waterproof Deutsch connections, which also help to make installation easy.Key FeaturesExtra-heavy, 7-gauge, 304 stainless steel bladesCompletely flat blade design reduces sprayHigh-impact, corrosion-proof upper mounting bracketsLarger diameter mounting hardware stands up to demanding conditionsKit ContentsTwo 7-gauge stainless steel standard finish bladesTwo 12-Volt XD Extreme Duty actuators with6 cable and Deutsch connectorsLenco Owner's/Installation ManualStainless steel mounting hardwareNOTE:Two Actuator Extension Harnesses (one per actuator) are required and must be purchased separately. Control switches are also sold separately.