1Prevent Rust: E track J hook is made of premium metal material, and the surface is coated to prevent rust in bad weather, and can withstand sufficient pressure and weight. 2Multifunction: E Track hooks expand space for enclosed trailers, warehouses, trucks, pickups and vans. Hang your backpacks, jackets, cables, equipment bags, wires, tools. Hang a ladder using two J hooks. 3Maximum Load: With a safe working load of 1,200 pounds, J hook allows you to hang a variety of goods while you work and organize your warehouse, garage, luggage. 4Easy Install: Ideal for both e and x tracks, the hook is a universal size and can be installed in three seconds. Fits all standard 2.5in x 1in slots on a vertical or horizontal E Track. 5Widely Used: E track J hook is suitable for large ship bedrooms, motorhomes, pickups, trucks, vans, etc., to bring more storage space to your vehicle.