【Stabilized support bar frame and easy adjustment system】The boat cover support poles are made of durable aluminum alloy material, aluminum tubes are 1mm thick, durable, won't rust after many times of use and can withstand the pressure of storms, meanwhile the boat cover support bar is adjustable in any length from 22.6"-62" to fit different heights of boat covers. 【A set of strut bar fittings prevents water from pooling】2 Pack support poles are matched with 6 webbing straps and 2 weight bags, the weight bags are filled with water and mounted on top of the poles, and webbing straps are mounted on top of the poles, which prevents them from being blown over by strong winds. 【Careful design won't damage your boat cover】Boat cover poles use round mushroom caps that won't damage your boat cover while holding it up better, large discs on the bottom for better grip and stability, and top-mounted webbing that can be tied around the edge of the boat to stabilize the support poles. 【Suitable for many styles of boat covers】Boat cover support pole is adjustable, allowing the height of the support pole to be adjusted for different sizes of boat covers, thus fitting most styles of boat covers, such as pontoon boat cover, jon boat cover, v hull boat cover, runabout boat cover and more. 【Quick and easy installation】Fill the weight bag with water and place it on the bottom of the support pole, then mushroom cap the top of the pole to install the webbing straps, hook the edge of the hull with the hook on the end of the webbing straps, then adjust the length of the strap to keep the strap taut. Boat Cover Support Poles System for Pontoon