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Help CenterDouble-Ended Box Wrench 12-Point 10-30mm For Automotive Engine Work With 1-Year Warranty
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Welcome to Cangzhou Dean Safety & Special Tools Co., Ltd. – a trusted manufacturer with over two decades of expertise (established in 2001) and an annual export value exceeding US$100 million. Our Double-Ended Box Wrench 12-Point (10-30mm) is specifically engineered for automotive engine work, offering precision, durability, and a full 1-Year Warranty for your peace of mind. Whether you’re a professional mechanic or a DIY enthusiast, this wrench delivers reliable performance for fastening and loosening bolts in tight engine compartments.
Crafted from premium chrome vanadium steel, this wrench ensures exceptional strength and resistance to corrosion. The 12-point design provides a secure grip on hexagonal fasteners, reducing slippage and rounding. With 18 popular sizes ranging from 10mm to 30mm (including 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 30mm), you can tackle a wide variety of automotive tasks – from engine repairs to transmission work. Each wrench is double-ended, saving space in your toolbox and allowing quick size changes without reaching for another tool.
Our wrenches undergo strict quality control to meet international standards. The surface is treated with a black oxide or chrome-plated finish for added durability and a professional look. The ergonomic handle design reduces hand fatigue during prolonged use, while the precise 12-point broaching ensures a snug fit on bolts. Whether you’re working on a car’s cylinder head, oil pan, or suspension components, this wrench set is your reliable partner.
| Size Range | 10mm – 30mm (18 common sizes) |
| Point Count | 12-Point |
| Material | Chrome Vanadium Steel (CR-V) |
| Finish | Black Oxide / Chrome Plated (Optional) |
| Warranty | 1 Year |
| Application | Automotive engine, transmission, suspension, etc. |
| Packaging | Individual or complete set (customizable) |
Detailed Features & Benefits
Double-Ended Design: Each wrench features two different size ends, reducing tool changes – ideal for tight engine compartments where every second counts.
12-Point Configuration: Provides 30-degree swing arc, allowing use in confined spaces. Engages fasteners at 12 points for reduced slippage and less wear on bolt heads.
Premium Chrome Vanadium Steel: Heat-treated for high torque resistance and long service life. Meets industrial strength requirements for daily professional use.
Corrosion-Resistant Finish: Black oxide or chrome plating protects against rust and oil, making cleanup easy after engine repair.
Ergonomic Grip: Smooth, rounded handle edges minimize hand strain – comfortable even during repetitive tightening or loosening tasks.
Comprehensive Size Range: From 10mm to 30mm, covering the most common metric fasteners found in Japanese, American, and European vehicles.
1-Year Warranty: Our commitment to quality ensures you receive a replacement if any defect occurs under normal use within one year.
Why choose our double-ended box wrench set for your automotive engine work? Precision – each wrench is broached to exacting tolerances for a tight fit. Versatility – the 18-piece set covers nearly every common engine bolt size. Reliability – backed by a manufacturer with a global export network (serving North America, South America, Europe, Asia, Africa, and Oceania).
Our factory in Cangzhou, Hebei, China has been producing high-quality tools since 2001. With an annual export value exceeding US$100 million, we have earned the trust of clients in over 50 countries. We ship from major ports (Tianjin, Shanghai, Ningbo) with flexible logistics to meet your deadlines. Every wrench is inspected before packaging to ensure it meets your expectations.
Conclusion: The Double-Ended Box Wrench 12-Point 10-30mm is an essential addition to any mechanic’s toolbox. Featuring durable construction, practical size selection, and a solid 1-year warranty, it delivers the performance you need for engine, transmission, and other automotive repairs. Contact us today for bulk orders, custom branding, or sample requests. Invest in quality – choose Cangzhou Dean Safety & Special Tools.
Frequently Asked Questions (FAQ)
Q1: What sizes are included in this set?
A1: The set includes 18 metric sizes: 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, and 30mm. Each wrench is double-ended, meaning two different sizes per piece – for example, 10x11mm, 12x13mm, etc. (exact pairings may vary; please confirm when ordering).
Q2: Is this wrench suitable for SAE (imperial) fasteners?
A2: This product is designed for metric fasteners (10-30mm). For imperial sizes, we offer separate SAE sets. Please check our product line for inch-sized options.
Q3: What material is the wrench made of?
A3: High-quality chrome vanadium steel (CR-V) with heat treatment for strength. The finish is either black oxide or chrome plated, depending on your preference.
Q4: Does the 12-point design damage bolt heads?
A4: No – the 12-point configuration actually reduces the risk of rounding compared to 6-point wrenches, as it distributes force over 12 contact points. However, always use the correct size for best results.
Q5: What is the warranty coverage?
A5: We offer a 1-year warranty against manufacturing defects under normal use. If a wrench breaks or deforms due to material or workmanship issues, we will replace it free of charge.
Q6: Can I purchase individual sizes instead of the full set?
A6: Yes, individual double-ended wrenches are available in specific size combinations. Please contact our sales team with your requirements for a customized solution.
Q7: How should I clean and store the wrenches?
A7: After use, wipe with a clean cloth to remove oil and dirt. Store in a dry toolbox or pouch. The corrosion-resistant finish helps prevent rust, but avoid prolonged exposure to moisture.
Q8: Do you provide custom branding (logo engraving)?
A8: Yes, we offer OEM/ODM services. Minimum order quantities apply. Please inquire for details and lead time.
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