Tab size: 12″ x 9″. Hydraulic trim tabs are known for power, precision, and durability. Get the most from your boat, no matter what the load, speed, or sea conditions. Using the helm control, you can adjust the tabs individually or in unison to create the perfect cruising attitude. Increase speed, improve fuel economy, smooth out a rough ride, and get on a plane faster. Kits include: (2) Trim Plane Assemblies, (2) Hydraulic Actuators (A1101A), (1) Hydraulic Power Unit (V351HPU1), Hydraulic Tubing and Hardware Controls sold separately.