【Package includes】 8 Pcs track screws and 8 Pcs nuts. 【Specifications】 Material: 304 stainless steel. Color: silver color. Size: (1) kayak rail screw: 0.79 x 0.24 x 0.24 inches (the total length is 0.96 inches, standard M6 threaded hole); (2) kayak rail nut: 1.14 x 0.51 x 0.12 inches. 【Features】 Advantages: rust and corrosion resistant. Heat resistance: 932 degrees Fahrenheit. Cold resistance: -148 degrees Fahrenheit. Odor: Odorless. 【How to use】 Easy to install with just an M6 phillips screwdriver, no need to drill holes in your kayak. 【Wide Use】 These kayak rail/track screws and nuts are suitable for most boat rail/track systems. If you use this product on the rail system, you can install or place any accessories in the rail system on your kayak or off-road vehicle, such as fishing pliers, paddle straps, paddle leash, track base, cell phone holder base. 【Notes】 · The color may exist a slight difference due to different screen displays. · Manual measurement, please allow slight errors on size.