Features: Eye nut and screw rod diameter M4mm, this awning plug is suitable for awning rails with a pitches of 4.5 mm and above, suitable for most RVs models. Simply screw into your awning rail to prevent awnings sliding along the rail. This is a multipurpose Stainless steel awning rail stoppers.Tarpaulin Support,Awning Marker,Windbreak support. The awning rail hook is made of stainless steel, which is durable and rust-proof. Stainless steel material has excellent durability and can be used for a long time without being easily rusted or damaged. They are usually able to withstand large weights and forces, providing stable and reliable support. Specifications: Material:Stainless Steel Size:4mm Length:Approx.30mm/1.18'' Quantity:4Set,6Set,12Set(optional) Package Includes: 4Set or 6Set or 12Set Awning Rail Stoppers note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.