Check the listing for details. 15 Set 5/16" Tube ID Compression Assortment Kit Sleeve Ferrule & Insert. Condition: New. Listed at 11.44 USD. This brass compression sleeves ferrule is widely used in pipe connection for hydraulic and pneumatic systems, HVAC, humidifiers, etc., suitable for connecting copper, brass, aluminum, or plastic tubing.Specification:Color: Brass ToneMaterial: BrassSleeves Ferrule Size: 8 x 10 x 6mm / 0.32 x 0.39 x 0.24 inch;(ID*OD*H)Insert Fitting Size: 5 x 8 x 14mm / 0.2 x 0.31 x 0.55 inch (ID*OD*H)Suitable for connecting 8mm pipe.Packing List: 15 Pack x Brass Ferrule, 15 Pack x Insert FittingAdvantage:The brass ferrule fittings are made of brass, which has excellent corrosion resistance, durability, rust resistance, and high-temperature ductility, and has a longer service life and is reusable.These ferrules have a smooth surface and provide a good seal, providing a secure connection for pipe connections.