Super Trim Tab Kit (without switch) - designed for sport-fishing boats & large extreme duty vessels Dimensions: 12" by 36" 304 stainless steel 7 gauge blades and 10 guage upper and lower mounting brackets 12 volt extreme duty actuators with 316 SS billet ram 3/8" bolts 3/8" diameter hinge pin 3-3/4" zinc anodes Kit includes: 2 each of SS trim tab planes with 3-3/4" zinc anodes 2 each of #15056-001 (extreme duty) actuators with 6' lead & Deutsch plugs Upper stainless steel mounting bracket with gland seal Lower stainless steel mounting bracket All necessary stainless steel mounting hardware Actuator extension harnesses will be required (2 for single actuator applications or 4 for dual applications) Please click here for Lenco's product details page on standard duty performance trim tab kitsNote: Only select models of the super strong kits have dual actuators -- #15021-101 (WM #11035821) has a single actuator for each plane.