The Irwin Industrial Tool Company HEX KEY 5/8 SHORT ARM 5/B is a high-quality tool designed for precision fastening. This hex key features a 5/8 inch size, making it suitable for a variety of applications. Constructed from durable steel, it offers excellent resistance to wear and tear. The short arm design allows for easy access in tight spaces, making it ideal for both professional and home use. Its compact size enhances portability, while the black oxide finish provides added corrosion resistance. This hex key is an essential addition to any toolbox, ensuring you have the right tool for hex fasteners.