Durable Reinforced Fiberglass Construction Great for storage and electronics 4x bolts included for installation Lockable (2 Keys Included) Note: Optional mounting clamps available with extra cost , but usually you can drill the holes on the top bar and mount the box with the 4x bolts and avoid this extra cost.

Usually you can drill holes through the tube and mount the box with the bolts. If you want to avoid drilling holes, please order this optional clamps(4 pcs).