Toolbox Brackets For Truck Bed Rails J Hook Crossover Tool Box Mounting Clamps For Pickup Truck Tool Box Pickup Truck Toolbox Kit HEAVY DUTY MATERIAL - Heavy duty rust proof aluminum with galvanized hardware. PIT66 Tool Box Mount J Hook Toolbox Pickup Pair Rail Mounting Kit Clamp Tiedown Truck 4PCS The Truck Tool Box Tie Downs Hook is suitable for all make and model trucks, securely secure any crossover kit, and can be used with other cargo management systems Durable, ready for tough environments. Safely secures any crossover style toolbox, J Hook style tie downs, larger clamping area. Heavy Duty Material - Heavy Duty Rust-Free Aluminum with Zinc Plated Hardware Compatibility - Compatible with Universal Secures securely any crossover toolbox, J-hook lashing straps, larger clamping surface. Tool Chest Fixing Kit – Products Ltd SIZE/DIMENSIONS Aluminum clamp 1-1/4 x 1-1/2, Screw length 3-3/4