Double Handle Design For Less Effort: The dual-handle feature minimizes the force needed for nozzle operation, reducing fatigue during prolonged use. Quality Sealing Gasket: The tapered rubber seal ring ensures a leak-proof connection, keeping your workspace clean and efficient. Thumb-Release Mechanism For Easy Use: This intuitive feature allows for effortless operation under pressure, enhancing your overall productivity. Compatible with Pneumatic, Manual, Electric Grease Guns: The 1/8" NPT compatibility makes it versatile for a wide range of applications. Spring With Good Elasticity: The spring mechanism ensures smooth and consistent operation, crucial for maintaining optimal grease distribution. Revolutionize your grease gun experience with our top-of-the-line coupler. Designed for professionals, it offers unparalleled performance and user-friendliness, making every maintenance task a breeze.