Exalt HD Rubber Tech Mats help make maintenance a breeze by keeping you organized and providing a clean, non-slip working surface.The labeled o-ring chart features grooves that hold your marker's seals in place while you work. The mat also features 3 molded trays that keep loose screws, small parts, and tools from falling or rolling away. The main portion of the mat features a molded hexagonal pattern that keeps your marker in place while protecting it from scratches and debris. When you're done, roll the mat up and store it in your gear bag until next time.