The Eklind 19210 SAE Plain Double-Ball-Hex Key is the perfect tool for working with hexagonal fasteners. It has a black oxide finish and double ball handle, which allows you to work in tight spaces. The black oxide finish makes this tool resistant to corrosion. The double ball handle provides excellent grip and maximum comfort when working in tight spaces. This 5/32″ tip size hex key has an arm length of 5 15/32 in., allowing you to reach into deep or narrow openings where other tools cannot fit. The Eklind Hex Key is ideal for professionals who need to tighten or loosen hexagonal fasteners on a regular basis.