For outboards up to 150hp. Kit includes helm pump, cylinder, fittings, oil, hose & instructions (wheel is optional extra). Helm has non feed back valves to lock out engine torque. Shaft is standard 3/4″ taper. Cylinder mounts to tilt tube & suits most splashwells, even narrow ones down to 522mm wide. Cylinder can be fitted to most boats without removing motor. Coated marine alloy and stainless steel components. Instructions give clear steps for installation and hassle free hydraulic bleeding.