The Britool open-end spanners (metric) are forged in chrome vanadium steel with a high chrome finish. The open end is angled at 15° from the handle axis. ISO 691 - ISO 1711-1 - ISO 3318 - ISO 10102 - DIN 3110.Select Option 10 x 11mm10 x 13mm12 x 13mm14 x 15mm16 x 18mm17 x 19 mm Add to Basket Quantity