The SeaStar EPSK1474 OPTIMUS 360 JOYSTICK UPGRADE with QUAD EST ENGINES is a high-quality control and steering system designed for boats. This upgrade includes the OPTIMUS 360 JOYSTICK CONTROLLER, which provides precise and responsive steering, as well as four EST engines for smooth and efficient power transmission. The SeaStar brand is known for its durability and reliability in the marine industry, making this upgrade a valuable investment for boat owners looking to enhance their steering capabilities.