This Teng Tools set consists of 6 fibre-reinforced ratcheting offset spanners The spanners are double ended with a different size at each end The 12-point heads are offset at a 25 degree angle allowing better access The ratchets have a reversible action allowing tighteningloosening in both directions Manufactured from strong chrome vanadium steel with a satin finish Supplied in case with a removable hinged click lock lid for use as an individual set or part of Teng Tools tool storage systems The TTRORS set contains Ratchet Ring Spanners in the following metric sizes 6 x 8mm 7 x 9mm 10 x 13mm 12 x 14mm 17 x 19mm and 21 x 22mm