CURT 4 Way Flat Vehicle Side to 6 Way Round Wiring Adapter, Dinghy Towing Model 58981 Nissan NV Running Boards This particular clevis hook has Weathertight hook and loop This particular clevis hook has a hook size of 1 1 4" and offers a gross trailer weight capacity of 35 The adjustable work van shelving is deeper to hold more tools and equipment and has captive nuts at each corner for easier assembly and quieter operation It is particularly intended for use in flat towing and dinghy towing to equip the dinghy vehicle with a 6 way round connector It easily plugs in your vehicle's electrical socket and usually requires no additional wiring