The Surf Adapter fits to any skateboard and mounts to front truck.Experience 3x tighter turns, smooth fast pumping, improved flow, increased deck articulation and grip around curves.Enhances truck percompatible withmance compatible with a skateboard, longboard, or drop-through board.Transcompatible withms a regular or reverse kingpin truck into a surfskate truck - great surf trainerProfessional Hexagonal Skateboard Screws: Choose specially equipped screws. Most of the matching screws on the market are ordinary screws, which are easy to wear and slip.The 18.5mm screws are specially equipped, which are not easy to wear and are durable.Damping pads and screws are Random color, don't accept the specified colorsize:18.5mm Material:Aluminum alloycolour:SilverPackage Contents:1 * Surf Adapter4 * Carbon steel hexagon socket screw + nutOnly the above package content, other products are not included.Note: Light shooting 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.