Features: Make of nylon, ensuring durability and long terms use. The 3/5/7/9/11 slot structure provide more attachments point for various accessories. Light weight design that doesn't create excesses weight. Specifically designs as accessories for camping lights, enhancing functionality. Easy Installation: Can quickly installed on camping lights without tool or skills. Specifications: Materials: Nylon Type: 3 slot/5 slot/7 slot/9 slot/11 slot Color: Black/Sand 3 slot size: about 4.5x2cm/1.77x0.79inch 5 slot size: about 6.5x2cm/2.56x0.79inch 7 slot size: about 9.5x2cm/3.74x0.79inch 9 slot size: about 10.5x2cm/4.13x0.79inch 11 slot size: about 12.5x2cm/4.92x0.79inch Package Includes: 1set Nylon Rail note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.