Socket Wrench Material:Chrome Vanadium steel Plating: Chrome,bright surface heat treatment Spec:1/2"series Socket WrenchMaterial:Chrome Vanadium steelPlating: Chrome,bright surfaceheat treatmentSpec:1/2"series, including S8xD22xL38,S 9xD22xL38,S10xD22xL38,S11xD22xL38, S 12xD22xL38,S13xD22xL38, S14xD22xL38, S15xD22xL38, S16xD22xL38; S17xD24xL38, S18xD25xL38, S19xD26xL38,S20xD28xL38, S21xD28xL38, ...