--- product_id: 3992963 title: "LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI" brand: "locknlube" price: "372 Lei" currency: RON in_stock: true category: "Lock N Lube" url: https://www.desertcart.ro/products/3992963-locknlube-locking-grease-gun-coupler-1-8-inch-npt-rated store_origin: RO region: Romania --- # Locks on securely for hands-free use Universal fit for all grease guns & Zerk fittings Rated up to 10,000 PSI heavy-duty pressure LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI **Brand:** locknlube **Price:** 372 Lei **Availability:** βœ… In Stock ## Summary > πŸ”§ Lock it, grease it, forget it β€” maintenance made effortless! ## Quick Answers - **What is this?** LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI by locknlube - **How much does it cost?** 372 Lei with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/3992963-locknlube-locking-grease-gun-coupler-1-8-inch-npt-rated) ## Best For - locknlube enthusiasts ## Why This Product - Trusted locknlube brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Built to Last:** Includes a spare rebuild kit ensuring long-term, reliable performance. - β€’ **Versatile Reach:** Works seamlessly with SAE and metric Zerk fittings, perfect for tight spots. - β€’ **Lock & Load Efficiency:** Secure lock-on coupler frees both hands for faster, mess-free maintenance. - β€’ **Universal Compatibility:** Fits all manual, battery, and pneumatic grease guns with 1/8-inch NPT threading. - β€’ **Quick-Release Innovation:** Patented thumb lever allows fast attachment/removal even under 10,000 PSI pressure. ## Overview The LockNLube Locking Grease Gun Coupler is a durable, steel and rubber tool designed for professional-grade lubrication tasks. Rated to withstand pressures up to 10,000 PSI, it securely locks onto all standard grease guns and Zerk fittings, enabling hands-free operation. Its rebuildable design with a spare kit ensures longevity, while the patented quick-release thumb lever streamlines maintenance workflows. Backed by a 1-year warranty, this compact 3.45-inch coupler is a must-have for efficient, mess-free machinery upkeep. ## Description Buy LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI: Grease Guns - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases ## Features - LOCKS ON, STAYS ON: Secure lock on grease coupler lets you grease machinery with both hands free. No leaks or mess, making maintenance faster and easier for every job. - REBUILDABLE DESIGN INCLUDED: Comes with a spare rebuild kit for long-lasting use. Get the best lock on grease coupler value with easy maintenance and reliable performance. - UNIVERSAL GREASE GUN FIT: Compatible with all grease gunsβ€”manual, battery, or pneumatic. The 1/8 in NPT threaded connection fits most grease gun coupler lock setups. - FITS ALL ZERK FITTINGS: Works with SAE and metric Zerk fittings. Quick lock grease gun coupler design reaches tight spots and adapts to any machine for versatile use. - EASY RELEASE UNDER PRESSURE: Patented thumb lever opens jaws for fast attachment and removal. Rated up to 10,000 psi for heavy-duty jobs. Covered by a 1-year warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00H7LPKKU | | Best Sellers Rank | #655 in Automotive ( See Top 100 in Automotive ) #8 in Fuel Transfer & Lubrication Products | | Color | Silver | | Customer Reviews | 4.7 4.7 out of 5 stars (32,144) | | Date First Available | December 9, 2013 | | Included Components | Just the item | | Item Package Quantity | 1 | | Item Weight | 4 ounces | | Item model number | 1/8\\\" NPT | | Manufacturer | LockNLube | | Material | Steel, Rubber | | Maximum Pressure | 10000 psi | | Part Number | GC81011 | | Product Dimensions | 3.45 x 0.63 x 1.66 inches | | Size | NPT With Spare Rebuild Kit | | Warranty Description | 1-Year Warranty | ## Product Details - **Brand:** LockNLube - **Global Trade Identification Number:** 00810102950260 - **Item dimensions L x W x H:** 3.45 x 0.63 x 1.66 inches - **Manufacturer:** LockNLube - **Material:** Steel, Rubber - **Maximum Operating Pressure:** 10000 Pound per Square Inch - **Number of Ports:** 2 - **UPC:** 810102950260 ## Images ![LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI - Image 1](https://m.media-amazon.com/images/I/71AOumYncbL.jpg) ![LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI - Image 2](https://m.media-amazon.com/images/I/51-dmMxOQ4L.jpg) ![LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI - Image 3](https://m.media-amazon.com/images/I/41mKVfYhn+L.jpg) ![LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI - Image 4](https://m.media-amazon.com/images/I/51xfZu1j8RL.jpg) ![LockNLube Locking Grease Gun Coupler, 1/8-Inch NPT, Rated To 10,000 PSI - Image 5](https://m.media-amazon.com/images/I/31i-oBYXhUL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Does this work with Milwaukee grease guns?** A: This does not work on the older Milwaukee m18 grease guns. They used a metric threaded hose on the older ones. The newer guns have standard thread and it will fit those. Take the current connector off the end of your grease gun hose. If the first 1/8 inch of the hose is not threaded, then you have a metric hose and this lock lune will not fit. **Q: Where is this product manufactured?** A: It is a quality product made in South Africa by Gurtech. **Q: After installing it, I couldn't depress the gun's pump. What did I do wrong?** A: Between myself and friends we have successfully installed five of these fittings without any problems. As per the other reviews, I would first check your gun to see if was in fact pumping grease, then reinstall the coupler and try again, before you put it on a fitting. Could be that the fitting jerk that you tried it on was frozen. If it still does not allow grease to flow, it is defective and you will need to return it. **Q: It is just the fitting or does it include the flexible line?** A: It is just the fitting. The hose was included to give context and sense of scale. ## Frequently Bought Together - LockNLube Grease Gun Coupler locks onto Zerk fittings. Grease goes in, not on the machine. World's best-selling original locking grease coupler. Rated 10,000 PSI. Long-lasting rebuildable tool. - LockNLube 90 Degree Grease Coupler Adapter - LockNLube Pressure Return Valve for Use with Cordless Grease Guns. No More Pressure Locks! Returns Grease to The Tube. Releases Hose backpressure. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ro/products/3992963-locknlube-locking-grease-gun-coupler-1-8-inch-npt-rated](https://www.desertcart.ro/products/3992963-locknlube-locking-grease-gun-coupler-1-8-inch-npt-rated) --- *Product available on Desertcart Romania* *Store origin: RO* *Last updated: 2026-09-09*