--- product_id: 92917799 title: "Dynofit 6 Spline Tuner Lug Nuts Key,with 19mm and 21mm Hex,for 1/2\" M12 Nut | 6 Spline Lug Nut Socket,for 1/2\"-20 12x1.5 12x1.25 Wheel Nuts,for Wrench with 3/4\" and 13/16\" Hex,Aftermarket Socket Key,1PC" brand: "dynofit" price: "€ 18.97" currency: EUR in_stock: true reviews_count: 13 category: "Dynofit" url: https://www.desertcart.hr/products/92917799-dynofit-6-spline-tuner-lug-nuts-key-with-19mm-21mm store_origin: HR region: Croatia --- # Dual hex sizes 19mm & 21mm Cold forged CR-V steel strength 72h salt spray tested durability Dynofit 6 Spline Tuner Lug Nuts Key,with 19mm and 21mm Hex,for 1/2" M12 Nut | 6 Spline Lug Nut Socket,for 1/2"-20 12x1.5 12x1.25 Wheel Nuts,for Wrench with 3/4" and 13/16" Hex,Aftermarket Socket Key,1PC **Brand:** dynofit **Price:** € 18.97 **Availability:** βœ… In Stock ## Summary > πŸ”© Unlock Precision Power with DYNOFIT – The Ultimate Spline Socket Key! ## Quick Answers - **What is this?** Dynofit 6 Spline Tuner Lug Nuts Key,with 19mm and 21mm Hex,for 1/2" M12 Nut | 6 Spline Lug Nut Socket,for 1/2"-20 12x1.5 12x1.25 Wheel Nuts,for Wrench with 3/4" and 13/16" Hex,Aftermarket Socket Key,1PC by dynofit - **How much does it cost?** € 18.97 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/92917799-dynofit-6-spline-tuner-lug-nuts-key-with-19mm-21mm) ## Best For - dynofit enthusiasts ## Why This Product - Trusted dynofit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Safe & User-Friendly Design:** Durable teeth and shape reduce risk during installation; recommended for hand tools to maximize lifespan. - β€’ **Dual Hex Socket Compatibility:** Seamlessly switch between 3/4 inch (19mm) and 13/16 inch (21mm) hex wrenches for versatile use. - β€’ **Premium Cold Forged CR-V Steel:** Built to withstand high torque without breakage, delivering professional-grade durability and reliability. - β€’ **Unmatched Corrosion Resistance:** Black plated finish with 72-hour salt spray certification outperforms competitors, keeping your tool pristine longer. - β€’ **Precision Fit for 6-Point Spline Nuts:** Engineered exclusively for 12x1.25 & 12x1.5 thread pitches, ensuring a secure, slip-free grip every time. ## Overview The DYNOFIT 6 Spline Tuner Lug Nuts Key is a premium aftermarket socket tool designed specifically for 6-point spline lug nuts with 12x1.25 and 12x1.5 thread pitches. Featuring dual hex compatibility (19mm & 21mm), it’s crafted from cold forged CR-V steel with a black plated finish that resists corrosion beyond industry standards. Tested for durability with 72 hours of salt spray resistance, this tool ensures a secure, slip-resistant fit and long-lasting performance, ideal for professional and enthusiast use alike. ## Description Buy DYNOFIT 6 Spline Tuner Lug Nuts Key for Wrench with 3/4 inch (19mm) and 13/16 inch(21mm) Hex, Aftermarket Spline Lug Nut Socket Replacement Tool for 1/2" 12x1.5 12x1.25 Wheel Nuts: Lug Nuts - desertcart.com βœ“ FREE DELIVERY possible on eligible purchases Review: Worked for what was needed - this product worked for its intended use. fit well, good value for money, quality piece, quite easy to use, and did excellent with removing. Review: Locking lugnut remover - Works and fits beautifully ## Features - Fitment: Only work with 6 Point/spline Lug Nuts, Typically 12x1.25, 12x1.5, 1/2-20'' thread pitch, Not work on hex or spike lugnuts. - Specification: ID:18mm, OD:20.5mm, Overtall:70mm, Depth:40mm; Works with multiple hex Socket:19mm(3/4'')&21mm(13/16'') - Performance: The socket with durable teeth and shape is more safer while you are installing the lug nuts and all of our products past 72 hours salt spray tested which can promise a longer service life compared to 48 hours for others. - Premium Material: Cold Forged CR-V Hard Steel(High Strength and Durability), quality durable surface dealing process which can offer better torque and prevents breakage. Black Plated would greatly improves rust&corrosion resistance and prevent the outer layer peeling easily. - Notice: Recommend hand tools to tight them, not powerful impact or it has danger to break the side or the teeth. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07GV73XC5 | | Best Sellers Rank | #6,505 in Automotive ( See Top 100 in Automotive ) #32 in Wheel & Tire Lug Nuts | | Brand | dynofit | | Color | Black | | Compatible Groove Diameter | 19 millimeters | | Customer Reviews | 4.4 out of 5 stars 1,116 Reviews | | Drive Style | Spline | | Exterior Finish | Passivated | | Fastener Type | Wheel | | Finish Types | Black Plated | | Grade Rating | Class 10.9 | | Inside Thread Size | M12 X 1.5 | | Item Diameter | 18 millimeters | | Manufacturer | Dynofit | | Material | Alloy Steel | | Material Type | Alloy Steel | | Metal Type | CR-V Steel | | Model | NKEY6B | | Number Of Items | 1 | | Number of Packs | 1 | | Number of Pieces | 1 | | Outside Diameter | 20.5 millimeters | | Part Number | 6-7-spline | | Screw Head Style | Hex | | Set Name | 6 Spline Socket Key | | Size Name | 6 Spline with Hex 3/4" and 13/16" | | Thread Class | Class 10 | | Thread Coverage | Fully Threaded | | Thread Size | M12 x 1.5 | | Thread Style | Right Hand | | Thread Type | Iso Metric | | UPC | 661748968306 | | Unit Count | 1 Count | ## Product Details - **Brand:** dynofit - **Material:** Alloy Steel - **Drive System:** Spline - **Finish Type:** Black Plated - **Number of Pieces:** 1 ## Images ![Dynofit 6 Spline Tuner Lug Nuts Key,with 19mm and 21mm Hex,for 1/2" M12 Nut | 6 Spline Lug Nut Socket,for 1/2"-20 12x1.5 12x1.25 Wheel Nuts,for Wrench with 3/4" and 13/16" Hex,Aftermarket Socket Key,1PC - Image 1](https://m.media-amazon.com/images/I/51PbZVdHviL.jpg) ## Available Options This product comes in different **Size, Set** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worked for what was needed *by H***D on March 25, 2026* this product worked for its intended use. fit well, good value for money, quality piece, quite easy to use, and did excellent with removing. ### ⭐⭐⭐⭐⭐ Locking lugnut remover *by S***L on August 14, 2026* Works and fits beautifully ### ⭐⭐⭐⭐⭐ Compatibility! *by B***S on August 12, 2026* exactly what i was looking for when i lost my other spline key! ## Frequently Bought Together - DYNOFIT 6 Spline Tuner Lug Nuts Key for Wrench with 3/4 inch (19mm) and 13/16 inch(21mm) Hex, Aftermarket Lugnuts Socket Replacement Tool for 1/2 inch 12x1.5 12x1.25 Lug Nut 1 Year Warranty - Circuit Performance Large Black 6 Point Spline Truck SUV Tool Key - Small 6 Point Spline Lug Nuts Key Tuner Socket Tool -Diameter Lock Lug Nut Key Compatible with 3/4 in (19mm) and 13/16 in(21mm) Hex Replacement Socket 12x1.5 12x1.25 1/2-20 10x1.25 3/8-20 Black --- ## 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.hr/products/92917799-dynofit-6-spline-tuner-lug-nuts-key-with-19mm-21mm](https://www.desertcart.hr/products/92917799-dynofit-6-spline-tuner-lug-nuts-key-with-19mm-21mm) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-27*