This heavy-duty Teflon PU expanding foam gun applicator is designed for professional and DIY use. Its Teflon coating ensures it is non-stick and easy to clean. Built for heavy-duty applications, it features an enhanced design for regular use with standard 500/750ml gun grade canisters. Commonly used for sealing cavities, fitting windows, door frames, and roofing. Key features include a chrome-plated body for corrosion and wear resistance, an aluminum construction with a steel nozzle for strength and lightness, and a nylon handle resistant to solvents. The ergonomic design ensures comfort during extended use, while the cast engineered mechanism provides reliability and hard-wearing performance. A sprung trigger allows for accurate flow control.