Proven racing sailboat throttle control solution, the Spinlock ACTU is in use on sailboats around the world. Use a winch style handle for your engine control and never get your lines caught again! Using ATCU under power is exactly like using a normal throttle lever, except you can remove the handle at any time. Run the engine in neutral simply by pushing the handle inward, which disengages the clutch Return the handle to the minimum throttle position, and it smoothly re-engages. Seastar control sold separately: The ATCU/1 Faceplate is designed to fit SeaStar Solutions (formerly Teleflex) model B700, CH2100P and CH2600P engine controls (sometimes referred to as TX172152). It replaces the standard faceplate and handle provided with those controls, adapting them for use on a sailboat with removable winch handle throttle control. Includes faceplate with adapters and ATCU-LVR custom lever handle (also fits most winch handles with eight-point star drive pattern, so you'll always have a spare in an emergency).