The Xtend+Climb StableStep WT4 Step Stool is valued for its ultimate stability and strength. This 4 step stool exceeds standards with an ANSI Type IAA 375 lbs duty rating. Given its superior strength, this ladder is made from industrial grade aluminum allowing for a lightweight design. The key performance qualities of the StableStep are its 8 inch deep steps with non-slip tread, which ascend in a stair-like format, and topped off with a locking safety bar, making it easy to go up and down with maximum stability and safety. The combination of all these great features make the WT4 extremely helpful for a range of uses from rugged duties on a job site to keeping around a garage or storage room in the house. With an 9.5 foot reach height, the stability of using the StableStep W4 will come in handy when heavy lifting is needed for carrying items in and out of high storage, or when tackling longer tasks that require secure footing. Even with achieving such a robust, strong, and large in use footprint, the W4 folds down to a thin and compact profile making it easy to stash away when not in use.