Grease Gun Coupler with Hose 1/8 NPT High Pressure Quick Lock Release Heavy Duty Grease Gun Hose Extension Locking Coupler 10000 PSI for All Standard Grease Guns Zerk Fitting

The AUTOMAJOR Grease Gun Coupler with Hose is a heavy-duty quick-lock grease gun fitting that solves the most frustrating problem in any greasing job — getting onto and off of grease zerk fittings cleanly. The lock-and-release design grips the zerk fitting with a positive lock when pumping, then releases instantly with the press of a button — no twisting, no leaking, no wasted grease. Specifications: 1/8 NPT thread fitting (standard for all grease guns), 12 inch flexible high-pressure hose, rated for up to 10,000 PSI working pressure, lock-on coupler design, fits standard SAE Type A grease zerk fittings (1/4-28 thread). Compatible with all standard manual grease guns, pneumatic grease guns, and battery-powered grease guns including DeWalt, Milwaukee, Lincoln, Alemite, Plews, Lumax, Lockable, Macnaught, and Gracoz. The traditional grease gun coupler design has not changed in decades — and neither has the frustration. Standard couplers grip the zerk fitting with a friction lock that often leaks during pumping, sticks when you try to pull off, or pops loose under pressure spraying grease everywhere. The AUTOMAJOR lock-on coupler uses a mechanical jaw design that locks securely onto the zerk fitting with no leaks, then releases cleanly with a button press when the job is done. The included high-pressure flexible hose extends your reach by 12 inches, allowing you to grease fittings in tight engine bays, suspension joints, U-joints, kingpins, fifth-wheel coupler plates, ball joints, tie rod ends, drive shafts, and other hard-to-access locations without contorting your grease gun. The hose is rated for the same 10,000 PSI working pressure as the coupler, ensuring no rupture or burst under heavy use. Common applications include: heavy equipment maintenance (excavators, bulldozers, loaders, skid steers), agricultural equipment (tractors, combines, balers, sprayers), trucking and trailer maintenance (kingpins, fifth wheels, U-joints, slack adjusters), automotive (ball joints, tie rod ends, drive shafts, suspension), powersports (ATV, UTV, motorcycle suspension), boat trailer wheel bearings and couplers, and industrial machinery maintenance. Construction: zinc-plated steel coupler body for corrosion resistance, hardened internal jaws that grip and release without wear, reinforced rubber hose with steel braiding for high-pressure performance, and standard 1/8 NPT threads on both ends for universal compatibility with grease guns and grease tips. The coupler accepts standard 1/4-28 SAE Type A zerk fittings — the most common grease fitting size used worldwide. Backed by AUTOMAJOR — trusted tools for heavy equipment operators, mechanics, and DIY users.

• Quick lock-on coupler with mechanical jaw design that grips grease zerk fittings securely without leaks. Press-button release pulls off cleanly when the job is done — no twisting, no stuck couplers, no grease sprayed everywhere. Solves the #1 frustration of grease gun work.
• Specifications: 1/8 NPT thread (standard for all grease guns), 12 inch / 30cm flexible high-pressure hose, rated for 10,000 PSI working pressure, fits standard SAE Type A grease zerk fittings (1/4-28 thread). Compatible with all manual, pneumatic, and battery-powered grease guns including DeWalt, Milwaukee, Lincoln, Alemite, Plews, Lumax, and most major brands.
• 12 inch flexible hose extends your reach into tight engine bays, suspension joints, U-joints, kingpins, fifth-wheel coupler plates, ball joints, tie rod ends, drive shafts, and other hard-to-access locations. Hose rated for 10,000 PSI matches the coupler pressure rating — no risk of rupture or burst under heavy use.
• Construction: zinc-plated steel coupler body for corrosion resistance, hardened internal jaws that grip and release without wear, reinforced rubber hose with steel braiding for high-pressure performance, standard 1/8 NPT threads on both ends for universal compatibility.
• Perfect for heavy equipment maintenance (excavators, bulldozers, loaders, skid steers), agricultural equipment (tractors, combines, balers, sprayers), trucking and trailer service (kingpins, fifth wheels, U-joints, slack adjusters), automotive ball joints and tie rod ends, ATV/UTV/motorcycle suspension, boat trailer bearings, and industrial machinery. The most common grease fitting size used worldwide — works on virtually any zerk you encounter.