Kits are complete with lock washers (where needed) and are black plated to help resist rust and corrosion. APPLICATION: GM, (Borg-Beck/Diaphragm style), 6 per kit, 3/8 in-16 x 1 in; Chrysler, (Borg-Beck/Diaphragm style), 3/8 in-16 x 1 in, 6 per kit; AMC, (Borg-Beck/Diaphragm style), 3/8 in-16 x 1 in, 6 per kit.