Strong and secure, this mast support permanently mounts to your trailer and features heavy-duty, box stainless steel construction with carpeted cradle and hinged upright. The mast support extends 4-1/2″ aft of rear trailer hull support and the mast rides about 30″ above the trailer. To launch, the support easily hinges to 90° away from the boat. Universal mount to fit trailer square/rectangular tube included. A $10 oversized item fee will be added at checkout.