High market share in Asia America Europe Special material for superior longevity Environmental protection surface treatment Product detailMaterial : carbon steel ,special materialSurface finish:phosphating ,chrome plated,electrophoresis black,zincProcess : heat treatment ,drop forgedSize : longth 500, hex key17-19-21-23, 17-19-23-24 Style : cross,iron pad ,hexageon socketPackage detailcarton in ...