The BlueSpot 6 Piece Flexible Ratchet Spanner Set is manufactured from chrome vanadium steel for increased durability. The Features 6 double ended spanners with open and 180° pivoting ratchet ring heads. The Manufactured from chrome vanadium steel for increased durability. The Double ended spanners with open and 180° pivoting ratchet ring heads. The 72 teeth provide 5° ratcheting increments making it ideal for use in tight spaces. The Fully mirror polished finish. Package Contents: 10mm, 12mm, 13mm, 17mm & 19mm . For manufacturers lifetime guarantee you just need to register online within 30 days of purchase.