Camco 50016 EazLift-Trailer Safety Chain and 7-way Plug/Cable StorageCamco’s Eaz-Lift’s Trailer Safety Chain and 7-Way Plug/Cable Storage helps keep your trailer chains and harness off the ground when your trailer is parked or in storage. This product fits 3 bolt, A-frame style tongue jacks. It attaches using the existing 3/8-inch front bolt on your tongue jack and requires a 9/16-inch wrench for installation. Once installed, it holds your 7-way plug angled down to help avoid water damage. This product measures 5 -inches (L) x 6 11/16-inches (W) x 3 11/32-inches (D) and is constructed of durable aluminum.keeps your trailer chains and harness off the ground when your trailer is parked or in storage.Compatibility: Compatible with 3 bolt, A-frame style tongue jacksOverall Measurements: 5-1/4″(L) X 6-11/16″(W) X 3-11/32″(D)Durable Construction: Made of a durable aluminum