The body and handle are made of plastic. A nickel-plated aluminum adapter is compatible with standard threaded foam inserts. The needle is made of stainless steel, the nozzle has a ball valve, and there is a nickel-plated barrel. It features a spring-loaded trigger and an adjustable brass button for precise flow control. Designed for filling joints and gaps with mounting foam, as well as for caulking and sealing. It is suitable for insulation, renovation, finishing, and construction work. The set includes 2 flexible extensions and 2 nozzles to help achieve gaps with the foam.