Descriptions:   12pcs Professional Fixed Head Spanners Ratchet Wrench Socket Spanner Set 8-19mm       The spanners are made from chrome vanadium、 have been mirror polished for a fine finish、 heat treated for strength and durability.       Specifications:     72 teeth ratchet ring (5  Increments )     Small head profile     High Torque Capacity     Chrome Vanadium Steel                 Size(mm)         8         9         10         11         12         13         14         15         16         17         18         19               Length(mm)         140         150         158         170         178         179         200         210         220         220         230         232        Features: Professionally heat treated for strength and durability. Chrome vanadium steel forging、 gears、and jaw hardening heat treatment、 hard wear-resistant. Through  fine polished and  plating bright chrome、 rust and beautiful. 72 tooth drive technology、 rotating 5 degrees can drive、 Facilitate to use in small space、 72 teeth was uniform force  and prolong life.   Notes: Please allow a bit manual measurement errors.   Package Included: 12pcs x Ratchet Spanners   More Details: