Drop-in replacement for SeaStar® Helm Compact designBall bearing piston raceBuilt-in lock valve for positive rudder lockIntegral relief valve for over-pressure protection3/4" tapered stainless steel shaftCast iron rotor Easily accessible lock valve and shaft seal for replacementConvenient front of dash fill1/4" NPT fitting for 3/8" tube, complete with elbow fittings