The for surfboard system has a more simplified and enhanced design and a red spring system that makes it one of the most unique surfboard devices. We removed the consumable parts of the old system, kept our red spring system intact, and strengthened the basic parts to make it lighter, more durable, and improved aesthetics. The new system is now unified on our own skateboard to make it more stable without sacrificing the well-known surfing process, making your surfing experience richer. Model: Configure integrated bracket Built-in red spring Recommended for skateboarders over 50kg Suitable for surfboards, longboards, double rockers, small fish boards for land surfboard system integrated design, using red springs, weight 50g lighter than for first generation, integrated design integrity is better, and it is more comfortable to slide. Colour: silver Material: aluminum alloy Package Contents: 1 x integrated bracket 1 x auxiliary bracket 1 x 29mm gasket 1 set x screws Note: shock cushion color random, don't accept the specified color Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.