Got a wobbly or sagging bifold door? This uxcell 4-piece Bottom Pivot Kit might be just the fix you need. Each pivot is 2 inches long with a plastic body diameter of 3/8 inch, and they're designed to fit closet doors that are 1 inch to 1-3/8 inches thick. They're made from a mix of steel and plastic, so they're stronger and more durable than all-plastic versions. The cool part is the adjustable height feature – you can screw them in or out to level your door perfectly. Installation is pretty straightforward, and you won't have to replace the whole door; just swap out the old, broken pivots. They're great for bifold wardrobe doors, sliding doors, cabinet doors, balcony doors, bookcase doors, and even storage room doors. Comes with four pivots, so you can do a couple of doors at once. Before you buy, just double-check the size to make sure they'll fit your door thickness. A simple, affordable solution to get those doors sliding smoothly again.