Adjustable Adjustable Allen key flexible adjusts to cover different sizes of screws. This Allen key offers high strength and good tenacity, durable to use, ensures a long time service. Premium Material Made from premium carbon steel material, it is hard and stainless, durable and durable for long use. Ergonomic handle Ergonomically designed handle for comfortable grip and easy use. Universal, standard 8 inch is available, you can use it according to your own needs. Portable and Lightweight It is lightweight, handy and easy to carry in your tool bag, portable hand tool for repairing and daily maintenance. Application Perfect repair tool for Craftsman, repairman, workshop and so on.