A quality TWELVE piece set of combination metric stubby spanners for both professional or occasional use. Each spanner has both a gear ratchet ring end and an open end. Manufactured from Chrome Vanadium Steel (CR-V) for longevity and durability and helps resist abrasion, oxidation and corrosion. The gear ring is manufactured from toughened HRC 42-49 steel. Hardened gear ring with a smooth 72 teeth ratcheting action. They come in their own handy woven roll up tool pouch which measures approx. 47cm x 24cm when open. Sizes are 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm and 19mm. Lengths vary from approx. 90mm for the smallest to 138mm for the largest.