M3500T Top Mount Utility Box Installation Mounting Kit for Top Mount Rail Application.

M3500T - Clamp Style, Clamp-On Mounting Kit is designed for Mounting Side Boxes with Clamp-On Style Mounts. One Bolt per Clamp and two to four Clamps per box can be used to Mount Box to Truck Rail. Kit comes with Bolts, Washers, Mounting Clamps, Nuts, Rubber, Bracket and Installation Sheet.