The INTERTOOL Aluminum Spray Foam Gun with PTFE is your efficient solution for dispensing expanding foam insulation and sealants. Engineered for use with twist-on canisters such as the Great Stuff Pro 24oz, this gun minimizes foam waste and overspray compared to traditional straw-tipped cans. It features a convenient flow control knob for precise adjustment of foam bead size and comes with four tip attachments for customization and extended reach. When stored with the canister attached and the flow control knob closed, the foam remains pressurized and uncured in the gun for up to 30 days, ensuring readiness for your next project. Cleaning is only necessary when the canister is removed.