Material: chrome vanadium Flexible ratchet head Can turn through 180 deg, allowing it to reach places at any angle Faithfull chrome vanadium spanners have flexible ratchet heads It can turn through 180 degree, allowing them to be used in more awkard to reach places at any angle Each spanner has a 72 fine tooth mechanism The 180 degree head for access into tight places; size: 17mm Faithfull provides 5 year guarantee; size: 17mm, Weight: 0.5291094288 Pounds, Manufacturer: Faithfull