Quick release bars make for quick and easy removal when not in use, no tools required All aluminum and stainless steel construction Mounts to virtually any seatpost 25.4mm to 34mm in diameter Lower cost solution if you only need to carry shorter boards International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.