Compact & Lightweight: The locking grease gun coupler features a compact design with a diameter of just 0.62"/16 mm and a length of 3.54"/90 mm. This not only enhances the refueling efficiency but also addresses the challenges of refueling in tight spaces. Designed for You: Each locking grease coupler comes with a cleaner, a hose, a leak-proof cap, and two extension needles. That cleaner is all set to swipe away the dirt around the ZERK. The hose is your trusty backup, and the leak-proof cap keeps the coupler's surface neat. The extension needles extend your reach for tight spots. Note: The cleaner is available in various colors and will be shipped randomly. 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. 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 3-jaw lock and spring structure ensures it doesn't detach under high pressure. 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.