Art. No.: 300054152 Product Name: Tamiya Air Remover for Oil Shock Absorbers. It quickly removes air bubbles that form when oil is injected, revealing the shock absorber's original performance. By lowering the air pressure inside the tool with the included pump, the volume of air bubbles mixed with the oil is increased, making them easier to remove. It can also be used as a stand to keep the oil shock absorber upright. It also supports long shock absorbers like those found in motor buggies. Simply place it in the holder after filling with oil, put the lid on, and operate the vacuum pump a few times. In no time, all air bubbles will disappear from the shock oil.