BlueSpot 12 PCE Metric Ratchet Spanner Set (8-19mm) The BlueSpot 12 PCE Ratchet Spanner Set is manufactured from chrome vanadium steel, heat-treated and chrome plated for increased durability. 5° ratcheting increments make the set ideal for use in tight spaces. Manufactured from chrome vanadium steel, heat treated and chrome plated for increased durability. 5° ratcheting increments. Fully polished mirror finish. Package Contents - 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 & 19mm To activate the manufacturers lifetime guarantee, you will need to register the product on the Bluespot website within 30 days of purchase.