1Zinc Plated: The truck tool box clamp comes with zinc plated hardware for added durability and oxidation resistance, ensuring long lasting use. 2Simple Installation: These Aluminum truck tool box clamp provides a secure and hassle free installation without the need to drill holes in your truck bed. 3Wide Load Distribution: The large top washer of the truck tool box mounting clamp spreads the load over a wide area, preventing damage and ensuring stability. 4Rust Proof: Made from rust proof aluminum material, the heavy duty truck tool box clamp is designed to withstand harsh weather conditions and ensuring long term use. 5Stable Support: These clamps feature a tie down mechanism that ensures your tools and equipment stay securely in place during transport, no matter the bumps or rough roads.