MagicRing® Screw Holding Ball End Hex Inch/Metric L-Key Set, 22 Piece. Includes: Standard Ball End Inch .050, 1/16, 5/64, 3/32, 7/64, MagicRing® Inch 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8", Standard Ball End Metric 1.5, 2.0, 2.5mm & MagicRing® Metric 3.0, 4.0, 5.0, 6.0, 8.0, 10.0mm. Chrome-V-Moly Super Tool Steel, Hard Chrome Finish, Long Arm. Screw holding, hardened spring steel retaining ring holds screw on. Ball end for 25° angle driving.