Ultimate Compatibility: Dive into a world where one coupler fits all! Our grease coupler plays well with any grease gun sporting a 1/8" NPT fitting, whether it's manual, electric, or pneumatic. From farm machinery to workshop tools, it's like the universal remote of the grease gun world, leveling up your efficiency game. Sturdy and Secure: Crafted with spring steel and #45 steel, our grease gun coupler stays firmly locked against pressures up to 10,000 PSI, eliminating any leak concerns. The added thickness to the 6-jaw lock and spring structure ensures it doesn't detach under high pressure. One-Hand Operation: Snap, lock, and roll! Give a simple press, and our grease gun tip is in action. Designed to make your life easier, its gear-like mechanics and reinforced spring ensure a robust grip and secure locking. It's all about keeping your refueling tasks smooth and efficient. Designed for You: Each locking grease coupler comes with a cleaner and a hose. That cleaner is all set to swipe away the dirt around the ZERK. The hose is your trusty backup. Note: The cleaner is available in various colors and will be shipped randomly. Compact & Lightweight: The locking grease gun coupler features a compact design with a diameter of just 0.62"/16 mm and a length of 4.48"/114 mm. This not only enhances the refueling efficiency but also addresses the challenges of refueling in tight spaces.