That’s an Underbody Coating Gun / Anti-Rust Spray Gun
What it is:
• Type: Siphon-feed spray gun for thick liquids
• Parts: Metal cup on top, long metal wand, red trigger handle + air inlet at the bottom
• Material: Looks like galvanized steel cup with brass trigger
What it’s used for:
This is for spraying thick protective coatings. The long wand lets you reach under cars and into tight spots.
1. Underbody anti-rust - spray bitumen, rubberized undercoat on car chassis
2. Wax / oil spraying - cavity wax, engine bay degreaser
3. Protective coatings - truck beds, trailers, equipment
4. Cleaning - some people use it to spray diesel/chemicals for washing