• Manual applicator gun for applying medium and high viscosity 3M windshield urethanes
• Barrel is sized for 3M 450 mL Flex Packs, reducing possibility of pinching and air pockets
• 18:1 thrust ratio makes application easier even for high viscosity materials
• All metal rod, handle, barrel and trigger mechanism adds durability and long life
• Twist-off barrel makes loading and removing Flex Packs fast and easy