WRIGHTMASTER Professional Telescopic Ladder is made of high-quality 6061-thick aluminum alloy to ensure excellent durability and longevity, with a maximum load capacity of 330 lbs. which can meet various household needs. The plastic interface components are reinforced with nylon plastic, which is not easy to break and will not leave plastic residue. The aluminum surface is oxidized to extend the service life of the folding ladder. It provides flexibility for different tasks and working environments. It has 2-solid mechanical bolts at each step, instead of designing a 1-button retract button so that even 1-of the buttons can not work normally, while other steps of the telescopic ladder can still remain in place without retracting, and the failure rate is very low during use.