·Chain specification 7*46*9 (wire diameter*inner length*inner width); Minimum breaking force 6T; Plug plate material PA6; Diameter 75, spacing 92; The displacement force of the plug plate shall not be less than 10kN, and the breaking force of the plug plate shall not be less than 14KN;

·C-shaped split ring, material 65Mn, 2T, no deformation.