Quick Size Selection: Each allen wrench is color-coded for quick size selection, eliminating the need to search through tools, saving time and boosting efficiency. The colorful coating on the surface enhances grip, providing a firmer hold and reducing the risk of slipping.The 22pcs hex wrench set includes 9 commonly used Metric sizes and 13 SAE sizes, catering to the tightening needs of most hex screws. It effortlessly meets various repair and assembly requirements, such as car maintenance, machinery repair, furniture assembly, or DIY toy building. The ball end allen wrench set, featuring an extended handle and a short-side L-shaped corner design, allows easy access to tight spaces for screwing and unscrewing with less effort. Its ball-end design permits up to 25° of angular tilt, providing flexibility in screw fixation regardless of screw position.All hex key allen wrench sets fit neatly in the box, eliminating the hassle of fumbling for tools. The foldable storage box saves space when closed, making it easy to store in a toolbox or carry for on-site work.