--- product_id: 281745492 title: "6 Spline Tuner Lug Nuts Key for Wrench with 3/4'' (19mm) and 13/16''(21mm) Hex, Lugnuts Socket Replacement Tool for 1/2\" 12x1.5 12x1.25 Lug Nut 1 Year Warranty 6 spline key Black 6-7-spline" brand: "dynofit" price: "$27.43" currency: USD in_stock: true reviews_count: 6 category: "Dynofit" url: https://www.desertcart.us/products/281745492-6-spline-tuner-lug-nuts-key-for-wrench-with-3 store_origin: US region: United States of America --- # 6-spline precision fit Dual hex sizes 19mm & 21mm 72h salt spray tested durability 6 Spline Tuner Lug Nuts Key for Wrench with 3/4'' (19mm) and 13/16''(21mm) Hex, Lugnuts Socket Replacement Tool for 1/2" 12x1.5 12x1.25 Lug Nut 1 Year Warranty 6 spline key Black 6-7-spline **Brand:** dynofit **Price:** $27.43 **Availability:** ✅ In Stock ## Summary > 🔩 Unlock the power of precision torque with dynofit’s 6-Spline Key! ## Quick Answers - **What is this?** 6 Spline Tuner Lug Nuts Key for Wrench with 3/4'' (19mm) and 13/16''(21mm) Hex, Lugnuts Socket Replacement Tool for 1/2" 12x1.5 12x1.25 Lug Nut 1 Year Warranty 6 spline key Black 6-7-spline by dynofit - **How much does it cost?** $27.43 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/281745492-6-spline-tuner-lug-nuts-key-for-wrench-with-3) ## 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 - • **Extended Service Life:** Surpasses industry standards with 72 hours salt spray testing, promising longevity beyond typical tools. - • **Dual Hex Compatibility:** Seamlessly works with both 3/4'' (19mm) and 13/16'' (21mm) wrenches for versatile tool pairing. - • **Precision 6-Spline Fit:** Engineered exclusively for 6-point spline lug nuts ensuring a secure, slip-free grip every time. - • **Premium CR-V Steel Build:** Cold forged alloy steel with black plating delivers unmatched strength and corrosion resistance. - • **Confidence-Backed Warranty:** 1-year hassle-free warranty with responsive customer support—because your ride deserves the best. ## Overview The dynofit 6 Spline Tuner Lug Nuts Key is a high-strength, black-plated CR-V steel socket designed exclusively for 6-point spline lug nuts with thread sizes 12x1.25, 12x1.5, and 1/2-20''. Featuring dual hex compatibility (19mm & 21mm), it offers superior grip and durability, validated by 72-hour salt spray testing. Ideal for professional-grade wheel maintenance, it comes with a 1-year warranty and dedicated customer support. ## Description Small Tips for newbie on If this 6 Spline Socket Key fits your lug nuts1: your lug nuts must be with 6 splines2: diameter of your lug nuts end less than 17mm(0.65")3: fits most aftermarket 1/2", 12x1.25, 12x1.5 thread pitch and part OEM lugnuts, measure the size especially for stock lug nuts because some factory lug nuts bigger than aftermarket nuts4: recommend hand tools to tight them, not powerful impact! or it has danger to break the side or the teeth!5: 1 year warranty and free exchange if broken by inopportune operation, contact us and reply in 24h6: recommend buy 2 or more and you can leave them in your garage or tool box7: this not a 100% perfect key, thanks for your understanding if meet small problems!8: many kinds of lug nuts in our store! Review: Good value for money - Great and no problems at all, fast delivery as well Review: Delivered as advertised - Fit and worked perfectly ## 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''), hand wrench recommended(only for 6 spline lug nuts) - 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. - Brand Promise: We hope that dynofit can make your shopping experience enjoyable. If you have any questions, we will provide you with assistance and service ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07GV73XC5 | | Best Sellers Rank | #80,930 in Automotive ( See Top 100 in Automotive ) #450 in Automotive Tire Repair Tools | | Brand | dynofit | | Color | black | | Colour | black | | Compatible Groove Diameter | 19 Millimeters | | Customer Reviews | 4.4 out of 5 stars 1,002 Reviews | | Drive Style | Spline | | Exterior Finish | Painted | | Exterior finish | Painted | | Fastener Type | Wheel | | Fastener type | Wheel | | Finish Types | Black Plated | | Grade Rating | industrial | | Inside Thread Size | M12 X 1.5 | | Item Diameter | 18 Millimeters | | Item Length | 2.76 Inches | | Manufacturer | dynofit | | Material | High Carbon Steel | | Material Type | High Carbon Steel | | Metal Type | Alloy Steel | | Metal type | Alloy 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-Piece Set | | Size Name | 6 Spline | | Thread Class | Coarse | | Thread Coverage | Fully Threaded | | Thread Size | 12 millimeters | | Thread Style | Right Hand | | Thread Type | Unified National Coarse (UNC) | | Thread size | 12 millimeters | | UPC | 661748968306 | | Unit Count | 1 Count | ## Product Details - **Colour:** black - **Exterior finish:** Painted - **Fastener type:** Wheel - **Material:** High Carbon Steel - **Thread size:** 12 millimeters ## Images ![6 Spline Tuner Lug Nuts Key for Wrench with 3/4'' (19mm) and 13/16''(21mm) Hex, Lugnuts Socket Replacement Tool for 1/2" 12x1.5 12x1.25 Lug Nut 1 Year Warranty 6 spline key Black 6-7-spline - Image 1](https://m.media-amazon.com/images/I/51LzMBSokdL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Good value for money *by S***N on 3 November 2020* Great and no problems at all, fast delivery as well ### ⭐⭐⭐⭐⭐ Delivered as advertised *by J***. on 2 September 2026* Fit and worked perfectly ### ⭐⭐⭐⭐⭐ Worked well *by T***Y on 27 December 2020* The product held up changing all 5 tires on my Jeep. Product shipped quickly. ## 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/281745492-6-spline-tuner-lug-nuts-key-for-wrench-with-3](https://www.desertcart.us/products/281745492-6-spline-tuner-lug-nuts-key-for-wrench-with-3) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-10-03*