This is an extension part for an in-car bar. It can be used with the in-car bars, short bars, and mounting kits sold here, and you can also use the rubber rings for preventing detachment that come with the in-car bar sets and rod holder sets. It can widen the gap between the in-car bar and the ceiling of your car by 6cm, which is convenient for loading fishing rods or using a net for storage. We also sell rod holders and shelves, so please consider them. Shipping will be via regular mail. This is a set of 2, which is for one in-car bar. If you need two, please comment. This is only the extension part, and does not include the in-car bar, etc., so please be aware of that. Although it is new and unused, it will be shipped without packaging and wrapped in cushioning material to reduce shipping costs, so please purchase with your understanding. We cannot offer a discount on this item, but if you purchase it together with a rod holder set, etc., we will deduct 200 yen, so please comment if you are purchasing them together.