Reese 55630 Weight Distribution Chain Kit Weight Distribution Chain Kit; Incl. 1 Chain w/9 Links; 2 Flat Washers 3/8 in.; 2 Locknuts 3/8 in.-16 Grade 2; 1 U-bolts 3/8 in.-16 x 1 1/2 in. x 1/2 in.;