18 Piece, Combination Short & Long Arm Hex-L Key Set, Includes Short: .050 inch, 1/16 inch, 5/64 inch, 3/32 inch, 7/64 inch, 1/8 inch, 5/32 inch, 3/16 inch & 7/32 inch, Includes Long: 1/16 inch, 5/64 inch, 3/32 inch, 1/8 inch, 9/64 inch, 5/32 inch, 3/16 inch, 1/4 inch & 5/16 inch, Made Of 8650 Chrome Nickel Alloy Steel, Black Oxide Finish To Resist Rust, Corners Are Sharp & Clean.