About this product: Foam gun material: Made of aluminum alloy, strong and durable, lightweight and compact. Expandable foam gun: ideal for filling, sealing and isolating small holes. Do not squeeze the wall or the pipe, waterproof, prevent pest control in the room. Very suitable for balcony doors, windows, bathtubs, cabinets, etc. Ergonomic design: comfortable to use for long periods of time. No post-distribution foam leakage. Spring-loaded trigger lets you precisely control flow, less foam waste. Easy to use and clean: The precise thread of the foam gun is easy to use. After use, the gun body is easy to clean. Product Description: Foam Gun, Professional Expander, Heavy Duty Polyurethane Foam Gun, Manual Caulking Gun. Content: 1 foam gun. Material: Aluminum Alloy. Features: The expanding foam gun is ideal for filling, sealing and insulating small holes. Do not squeeze the wall or the pipe, waterproof, prevent pest control in the room. Very suitable for balcony doors, windows, bathtubs, cabinets, etc. Foam gun very comfortable to use for long periods of time. No post-distribution foam leakage. Spring-loaded trigger lets you precisely control flow, less foam waste. Foam gun with precise thread easy to use. After use, the gun body is easy to clean.