Check the listing for details. 40 Pcs 1/2" ID Brass Compression Sleeve Ferrules Brass Compression Fittings. Condition: New. Listed at 18.37 USD. Brass compression sleeves ferrules have extensive applications in hydraulic and pneumatic systems, serving as connectors for air, water, fuel, and oil. These sleeves are capable of joining copper, brass, aluminum, or plastic pipes.SpecificationColor: Gold ToneMaterial: BrassFit Tube OD: 13mm / 0.51"Size: 13 x 14.9 x 7.7mm / 0.51 x 0.59 x 0.3 Inch (ID*OD*H)Package List: 40x Sleeve FerruleAdvantageMade of brass material, which is corrosion resistant, high pressure resistant, durable and has a long service life.The compression casing ring provides a reliable sealing effect, ensuring that the pipe connection is secure and less prone to leakage.InstructionThis sleeve ferrule can be connected to copper, brass, aluminum, or plastic tubing. Easy to connect and install.