Genius Tools' 7-Piece Metric Box End Wrench Set, No. DE-707M, comes in a plastic case and carries a lifetime warranty. The set includes the following items and sizes:
75 degree head angle for better access to tight spots.
Made of high strength chrome vanadium.
Sizes: 6 x 7-8 x 9-10 x 11-12 x 13-14 x 15-16 x 17-18 x 19 mm.