These sturdy quick release 5 step ladders are manufactured from 1'' square aluminum tubing, and with the included quick release hardware can be removed and reinstalled in seconds. This feature, along with the angled design makes these ladders ideal for pontoon boats as well as docks. The non skid coating on the treads, makes for sure footing and the angled design makes it easier to climb. Easy to assemble with stainless steel hardware included.