10 Pack Set: Includes 10 pieces of tube OD compression fitting adapters for multiple plumbing connection needs Wide Application Ranges: reliability sealing and reusability with temperature and pressure resistance, suitable for fuels, air, liquid, oil,, vacuum, and refrigerator water lines Three Piece Structure: Features a nut, sleeve, and body with insert for secure connection with copper, brass, aluminum, or tubing Efficient Compression Fitting: Designed to easily connects two 1 / 8 inch compression tubes together, providing quicker installation and disassembly compared to standard couplings Premium Brass Materials: Make of solids brass with excellent resistance, high temperature ductility and low permeability for long lasting durability, Manufacturer: Shurhome