VERSATILE AND INNOVATIVE - Use the 2x4 bracket and wood beam brackets to design custom shelves and storage space for your cargo with our E-track system. The board holder / E-track shelf bracket provides additional options for securing items. EASY INSTALL - Our precision E-track design ensures easy installation on your trailer, van, or truck bed. This E-track system is compatible with both E-track and X-track systems, giving you flexibility for your storage needs. PRECISION E-TRACK DESIGN - The E-track system features a precise design that provides maximum strength and security for your cargo. The E-track shelf / E-track shelf bracket securely holds your items during transport. DURABLE AND SECURE- Made of durable, zinc-coated steel, our E-track system wood beam socket is built to withstand heavy use and resist corrosion to provide a safe and secure anchor for your cargo DC CARGO - The trailer E-track accessories from DC Cargo are the perfect solution for your cargo management needs. Whether you need shelves, load bars, or a board holder, our E-track system provides versatility and strength for all your cargo transport requirements. The brackets are compatible with both E-track and X-track rail systems, making it a versatile option for your cargo transportation needs.