1. D VALVE LESS CLEANER This spray foam gun is an upgraded version of other brands with the addition of a valve to reduce cleaning frequency and save cleaner. The valve can seal the barrel to enable users to completely drain the residual sealant. Saves time and money 2. WIDE RANGE OF APPLICATION – This foam gun is perfect for any caulking project, ideal for filling, sealing and insulating small gaps, suitable for balcony doors, windows, bathtub, cabinet etc. No squeeze wall and pipe, waterproof and moistureproof, and prevent pests from entering the room 3. EASY TO CLEAN The TEFLON Material nonstick canistheer adaptor, needle, check valve,gun body are very easy to clean. It is recommended to clean the gun after every 23 uses to extend its life 4. USER FRIENDLY The foam gun is made of perfluorocarbon which can keep the gun clean and durable. Inlet valve, delicate thread make it easy to load and unload and not easy to leak foam. The Ergonomics handle is made of ABS plastic which is very comfortable for long time use