4 Way terminal busbar. Stainless steel 5/16-18 ” studs. 250 amps @ 12 volts continous rating. 48 volts max. Nickel pated brass busbar also has three #8-32 screw terminals rated at 15 amps each. Red glass filled nylon base with red high temperature plastic cover. Cover mounts to the 5/16″ end studs with included non-conductive acorn nuts. Stainless steel screws, nuts, and washers. 12 ft/lbs max. stud torque. Mounting holes are .200″ on 5.70″ centers. Base dimensions : 1.385″ W x 6.59″ L.