AUTO-FLOW STOP - Plunger automatically retracts 2 millimeters after each push to effeciently stop flow 360 DEGREE ROTATING HANDLE - Handle rotates for easy tip angle adjustments and manuvering in tight spaces TWIN THRUST SYSTEM - Advanced twin thrust dispensing system strengthens the force of the plunger enhanicng the flow of materials EXTRA LONG BARREL - Extra long, steel welded barrel allows for quick, hassel-free cartridge reloads while maintaining long-lasting durability SEAL PUNCTURE PIN INCLUDED - All Tajima caulking guns come standard with a seal puncture pin to easily open new tubes, Weight: 0.992080179 Pounds, Manufacturer: Tajima