DC Cargo Mall E Track Trailer Tie-Down Rail Mounting Screws Kit - 1.5" Galvanized Hex Head Bolts, Nuts, Washers (10 Pack) Mounting fasteners installation kit for E track cargo tie-down system Secure E track rails in trailers and trucks 10 pack - 1/4" diameter x 1.5" long hex head bolts, flat washers, nuts Use a 7/16 diameter drive to fasten both bolts and nuts Made of durable steel that is galvanized to increase rust- and corrosion- resistance