Easy to clean: The foam gun uses perfluorocarbon and ABS (non-stick material) engineering plastics. After use, the gun body is easy to clean. Precision Dosing：The spring-loaded trigger design precisely controls the amount of foam used, reducing economical consumption and wastage of foam. Excellent performance：High expansion and strong adhesion, it is very suitable for insulating and sealing small spaces such as doors and windows in your home. A tool that guarantees precision and working comfort: thanks to the built-in adjustment wheel, you can control the flow of material precisely. Robust and durable：The foaming gun's precision thread design is easy to handle and durable . Ergonomic design: The foam gun is coated with polytetrafluoroethylene (PTFE) to keep the gun clean and durable. This handle is made of ergonomic ABS plastic for durable and comfortable use. Pitch: 1. Open the valve, connect the foam tank to the muzzle, then rotate the gun to tighten. 2. Pull the trigger to spray. 3. Adjust the flow rate by turning the controller. 4. When you are done spraying, you have two options. If you want to take the foam canister, close the valve and keep pulling the trigger. until no foam comes out, then remove the foam canister. If you want to hold the canisters together, put the gun down with the valve open. Wide application: suitable for balcony doors and windows, bathtubs and air conditioning holes. Ideal for filling, sealing and Insulation with small gaps. Scope of delivery: 1pc/with a long plastic tube and 2 short tips