Brief Description:You'll get 120 pcs of 1/4 inches compression fittings including 60 pcs compression sleeve ferrule, 60 pcs insert and 20pcs nuts Sizes:3/8" inches-60pcs compression sleeve ferrule, 60pcs compression insert, 20 pcs nuts High-Quality Material: Solid , High Quality and durable brass construction. Lead Free, Corrosion resistance, ductility at high temperatures, and low magnetic permeability Easy to Use: These fittings are easy to assemble requiring no soldering, flaring or deburring. Standard Compression Fittings are suitable for a wide variety of applications Applications:This brass compression kit can be connected to copper, brass, aluminum, or plastic tubing. No flaring tool is required for assembly.It can keeps plastic tube from collapsing when tightened. And prevent leakage HASAOMOI 140PCS Compression Fittings Assortment kit - 3/8" of Brass Compression Sleeve Ferrule, Insert and nuts