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Help CenterDouble Box End Wrench Straight Handle Cr-V Steel Metric Ring for Automotive Repair & Maintenance
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Since 2001, Cangzhou Dean Safety&Special Tools Co., Ltd. has been a trusted manufacturer supplying high-quality tools to global markets with an annual export value exceeding US$100 million. Our Double Box End Wrench Straight Handle Cr-V Steel Metric Ring is engineered specifically for automotive repair and maintenance professionals who demand precision, durability, and reliability. Made from premium Chromium-Vanadium (Cr-V) steel, this wrench delivers exceptional strength and long service life even under intensive daily use. Whether you are a garage mechanic or an industrial maintenance technician, this metric ring wrench set is your go-to tool for tackling bolted connections in tight spaces.
Key Features & Technical Specifications
- Material Excellence: Forged from heat-treated Cr-V steel for superior hardness and resistance to deformation.
- Double Box End Design: Both ends feature a 12-point ring configuration for a secure grip on metric fasteners, reducing the risk of rounding.
- Straight Handle Construction: Provides optimal torque transmission and allows access to recessed bolts without interfering with adjacent components.
- Metric Sizing: Available in a wide range of metric sizes (6mm to 24mm, with other sizes upon request) to cover most automotive and mechanical applications.
- Precision Machined: Each wrench is CNC-machined to ensure accurate fitment and smooth engagement with fasteners.
- Corrosion Resistant: Comes with a polished or matte finish that resists rust and chemicals commonly found in automotive environments.
- Lightweight & Compact: The straight handle design minimizes weight while maintaining strength, reducing user fatigue during prolonged work.
- Customizable Options: We offer OEM/ODM services including custom laser engraving, special surface treatments, and tailor-made packaging sets.
| Parameter | Specification |
|---|---|
| Material | Chromium-Vanadium Steel (60 HRC minimum hardness) |
| Configuration | Double box end, straight handle, 12-point |
| Size Range (Metric) | 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm, 22mm, 24mm (other sizes available on request) |
| Surface Finish | Mirror polish / black oxide / phosphate (customizable) |
| Length (approx.) | Proportional to size (e.g., 10mm ≈ 180mm length) |
| Packing | Single piece in PP bag / set in blow case / bulk in carton |
Benefits for Automotive Professionals
- Save Time: Double-ended design reduces tool changes – use the appropriate size on either end without swapping.
- Reduce Bolt Damage: 12-point ring distributes force evenly, preventing rounding of bolt heads, especially important for rusted or torque-sensitive fasteners.
- Ergonomic Handling: Straight handle fits comfortably in the hand and allows for a natural wrist angle, minimizing strain during repetitive motions.
- Versatile Use: Ideal for brake calipers, suspension components, engine mounts, transmission bolts, and general chassis work.
- Long-Term Investment: Cr-V steel construction ensures the wrench withstands daily abuse in a workshop environment without cracking or bending.
Trusted by Global Buyers – Why Choose Us?
As a factory established in 2001, Cangzhou Dean Safety&Special Tools Co., Ltd. has accumulated over two decades of experience in manufacturing professional tools. Our annual export value surpasses US$100 million, serving markets across North America, South America, Europe, Asia, Africa, Oceania, and the Middle East. We ship from major ports including Tianjin, Shanghai, and Ningbo, ensuring timely delivery worldwide. Every double box end wrench undergoes strict quality control – from raw material inspection to final packaging. Our dedicated R&D team continuously improves product designs based on field feedback, making sure you get tools that perform reliably.
We invite you to experience the difference of professional-grade tools. Whether you need a single size for a specific task or a complete set for your workshop, our flexibility in customization – including branded packaging and private labeling – makes us your ideal partner. Contact us today for competitive pricing, samples, or technical consultation.
Frequently Asked Questions (FAQ)
Q1: What is the difference between a double box end wrench and a combination wrench?
A double box end wrench has ring ends on both sides, offering a more secure grip on the fastener and higher torque capability. A combination wrench typically has one open end and one box end, which is more versatile for quick loosening/ tightening but provides less grip.
Q2: Are these wrenches suitable for use with torque wrenches?
No, these are hand tools designed for manual turning. For torque-sensitive applications, use a calibrated torque wrench. However, the 12-point ring design can help you apply controlled force without slipping.
Q3: What sizes are available as standard?
We offer metric sizes from 6mm to 24mm. Common sizes like 10mm, 12mm, 13mm, 14mm, 17mm, 19mm are frequently stocked. Other sizes are available upon request with a minimum order quantity.
Q4: Is the Cr-V steel heat-treated?
Yes, every wrench undergoes heat treatment to achieve a hardness of 48–52 HRC (or higher as per requirement), ensuring durability and resistance to deformation under heavy use.
Q5: Can I get a sample before placing a bulk order?
Absolutely. We provide samples for your evaluation. Please contact our sales team with your preferred size and finishing requirements. Sample cost and shipping are negotiable.
Q6: What surface finish options do you offer?
Standard finishes include mirror polished, matte, black oxide, and phosphate coating. Each offers different levels of corrosion resistance and aesthetic appearance. Custom finishes are also possible.
Q7: Do you provide custom branding or packaging?
Yes, we support OEM/ODM services. We can laser engrave your logo, print on the tool or package, and create custom sets with foam inserts or blow cases. Minimum order quantities apply.
Q8: How do you ensure product quality during mass production?
We follow a strict QC process: incoming material inspection, in-process dimensional checks, hardness testing, and final visual inspection. Each batch is accompanied by a quality report upon request.
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