Walter werkzeuge double open end wrench spanner sets walter werkzeuge 000370281002 this 10 piece spanner set from walter werkzeuge features a range of quality tools manufactured with chromium vanadium steel phosphated the impact resistant environment friendly phosphating protects against corrosion on a long term basis so no flaking or chipping is possible spanner sizes 6x7 8x9 10x11 12x13 14x15 16x17 18x19 20x22 21x24 27x30mm walter werkzeuge 000370281002 double open end wrenc