Great for a variety of uses, this 8-piece Standard Hex Key Set is precision formed to exact dimensional tolerance for precise fit. They fit most common sizes of fasteners. The extra key length provides for greater access to hard to reach fasteners. Includes sizes: 1/16", 5/64", 3/32", 4/64", 1/8", 9/64",5/32",3/16". Comes packaged in a blister pack.