The Performance 22-Piece Ball End Hex Key Set includes both SAE and metric sizes for convenient access to most screw heads at angles up to 25-degrees. Features: * Alloy steel construction * Quick and convenient access to screw heads at angles up to 25-degrees * Thirteen SAE sizes: .05-inch, 1/16-inch, 5/64-inch, 3/32-inch, 7/64-inch, 1/8-inch, 9/64-inch, 5/32-inch, 3/16-inch, 7/32-inch, 1/4-inch, 5/16-inch, 3/8-inch * Nine metric sizes: 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm * Bonus plastic holders for easy storage What"s In The Box: * Performance 22-Piece Ball End Hex Key Set