The Black Diamond SAE Ball End Hex Key Set includes 13 inch sizes with ball-end tips that help you reach hex fasteners at an angle for easier access in tight or obstructed spaces. Sizes include 0.05, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, and 3/8 to cover common SAE applications. An efficient choice for assembly and maintenance work when you want the flexibility to turn fasteners without perfect straight-on alignment.