Astro 4538 Economy Air Undercoat Gun

Applies a top quality undercoat to vehicles to fight rust and stone chips • Applies all popular brands of undercoat in any viscosity • Unit comes with 2 tubes: - 3-1/4" Long with 5/16" ID - 7-1/4" Long with 1/4" ID • Cap Thread Pitch: 1-3/4" x 6 UNS • Quick disassembly for faster cleanups • Weight: 0.65lbs