This scooter surfboard rack is recommended for surfboards up to 8 feet long. It can work with longer boards, but it makes it more difficult. Features: Carrier arms can be adjusted to suit your board. Can be used with or without board bag/sock. Foam covered arms prevent dings or scratches on your surfboard. Bungee cords secure your surfboard like a baby in its mothers arms. Quickly remove arms or rotate inward when not carrying your surfboard, to reduce obstruction. How to Install: 1. Depress the spring lock, and slide lower carrying hook into upper arm. 2.Secure the mount to your scooters cargo rack.Top plate goes on top of cargo rack, bottom plate goes under. Tighten the plates using included bolts. 3. Insert arms into mount piece. Find the optimal position (see what works best with your surfboard and scooter), and tighten the bolts. 4. Remember to use the bungee cords to secure your surfboard. Specification: Material:Aluminum Alloy, EVA Protective Cotton Color:Black Mounting Type:Rack Mount Product Size:16.54 x 7.87 x 4.33 inches Package List: 2 x Bracket 2 x Aluminum Tube 6 x Screw 2 x Gasket 1 x Stand Base 1 x Base Spacer 1 x Instruction Manual