Boat Lifter holds up to 30 ft boat 10 to

Fully functional with 4 air tanks (2 per tube) to raise or lower in minutes. New valves for control box, Onga blower, comes with timber beams to attach to jetty poles without need of drilling holes. Lifter screws to metal plates with 4 bolts. Easy to attach or remove from jetty. Moves up and down steel bars with tide. Steel cross bars can be dismantled for transport of the 2 tubes individually. White gangways with marine carpet and protective rubber surrounds have styrofoam inside, so they float when lifter is lowered to walk on and enter boat. About 10m long x 4 m wide