Brass compression inserts are usually used to quickly and simply connect air, water, and oil pipelines; they are suitable for connecting and fixing nylon pipes, copper pipes, aluminum pipe joints, etc., and are often used in fuel and gas systems.SpecificationColor: Gold ToneMaterial: BrassFit Tube ID: 2mm / 0.08 InchHeight: 10.5mm / 0.41 InchSize: 2 x 3mm / 0.08 x 0.12 Inch (OD*Base Dia)Package List: 10 x Brass Compression InsertAdvantageGood brass material, strong and not easy to wear, has corrosion resistance, and high-pressure resistance, and can be used in many different types of environments. The surface is smooth and burr-free, the bite is tight, and it is not easy to get stuck or leak oil.