Product Description
This extra long mirror-polished double box end wrench is precision forged from high-quality alloy steel, featuring fine polishing and lapping processes with double-layer nickel-chrome plating for excellent rust resistance. The unique offset design follows ergonomic usage habits, and full-body heat treatment delivers performance exceeding US standards by over 30%. The extended handle provides greater torque, while the double box end design covers multiple sizes. Suitable for automotive repair, mechanical assembly, plumbing installation, equipment maintenance and other professional scenarios. Available in 17 sizes to meet different working condition requirements — the ideal tool for professional technicians and industrial maintenance.
Product Features
Premium Alloy Steel Forging — Precision forged from high-quality alloy steel with high strength, excellent toughness and long-lasting durability
Double Nickel-Chrome Plating — Double-layer nickel-chrome surface finish delivers superior rust and corrosion resistance with a beautiful mirror-polished appearance
Fine Polishing & Lapping — Precision polishing and lapping processes create a mirror-smooth surface with refined hand feel
Ergonomic Offset Design — Unique offset angle design fits natural usage habits for more comfortable and efficient operation
Full-Body Heat Treatment — Complete quenching and tempering process ensures uniform hardness, exceeding ASME standards by over 30%
Extra Long Design — Extended handle provides greater leverage for higher torque output, making large bolt assembly/disassembly effortless
Double Box End — Two different size box ends per wrench, one tool serves dual purposes for improved work efficiency
17 Sizes Full Coverage — From 5.5×7mm to 30×32mm, 17 sizes available to meet various job requirements
Product Specifications
| Model | Size | Overall Length | Box Qty | Carton Qty | Unit Weight | G.W. |
|---|---|---|---|---|---|---|
| W12202 | 5.5×7 mm | 160 mm | 10 pcs | 400 pcs | 0.05 kg | 22.00 kg |
| W12204 | 8×10 mm | 175 mm | 10 pcs | 400 pcs | 0.07 kg | 28.50 kg |
| W12205 | 9×11 mm | 191 mm | 10 pcs | 200 pcs | 0.09 kg | 20.50 kg |
| W12206 | 10×12 mm | 191 mm | 10 pcs | 200 pcs | 0.10 kg | 21.00 kg |
| W12207 | 11×13 mm | 206 mm | 10 pcs | 200 pcs | 0.12 kg | 25.50 kg |
| W12208 | 12×14 mm | 206 mm | 10 pcs | 200 pcs | 0.13 kg | 25.50 kg |
| W12209 | 13×15 mm | 232 mm | 5 pcs | 100 pcs | 0.15 kg | 17.00 kg |
| W12210 | 13×16 mm | 232 mm | 5 pcs | 100 pcs | 0.16 kg | 17.00 kg |
| W12211 | 14×17 mm | 232 mm | 5 pcs | 100 pcs | 0.17 kg | 18.00 kg |
| W12212 | 16×18 mm | 235 mm | 5 pcs | 100 pcs | 0.17 kg | 18.00 kg |
| W12213 | 17×19 mm | 255 mm | 5 pcs | 100 pcs | 0.21 kg | 23.00 kg |
| W12214 | 18×21 mm | 305 mm | 5 pcs | 100 pcs | 0.22 kg | 23.00 kg |
| W12216 | 19×22 mm | 305 mm | 5 pcs | 100 pcs | 0.23 kg | 24.00 kg |
| W12218 | 22×24 mm | 322 mm | 5 pcs | 50 pcs | 0.37 kg | 20.50 kg |
| W12220 | 24×27 mm | 370 mm | 5 pcs | 50 pcs | 0.54 kg | 28.50 kg |
| W12221 | 27×30 mm | 410 mm | 5 pcs | 40 pcs | 0.59 kg | 25.50 kg |
| W12222 | 30×32 mm | 420 mm | 5 pcs | 25 pcs | 0.65 kg | 17.50 kg |
Material: High Quality Alloy Steel
Surface Finish: Double Nickel-Chrome Plated (Mirror Polish)
Standard: Exceeds ASME Standard by 30%
Surface Finish: Double Nickel-Chrome Plated (Mirror Polish)
Standard: Exceeds ASME Standard by 30%
Applications
Automotive Repair & Maintenance — Engine bay, chassis and suspension system bolt/nut removal; extra long design reaches deep fasteners
Mechanical Assembly & Manufacturing — Machinery equipment assembly and precision installation of various standard fasteners
Plumbing Installation & Repair — Plumbing fixtures, industrial pipeline flange bolt tightening; offset design fits narrow spaces
Equipment Maintenance — Production line equipment, motors, pumps and other daily inspection and maintenance in factories
Construction Engineering — Steel structure installation, scaffolding setup, formwork fastening and other construction scenarios
Marine Repair — Engine room machinery maintenance; rust-resistant surface suitable for humid environments
Electrical Construction — Power transmission and distribution equipment installation and maintenance, meeting power industry tool requirements
Home DIY — Furniture assembly, appliance repair, bicycle maintenance and other household daily use
Why Choose Us
Direct Factory, Quality Controlled — Own production base with full-process control from raw material forging to finished packaging. Each wrench undergoes multiple quality inspections to ensure consistent factory quality.
Competitive Pricing, Bulk Discounts — Factory direct supply eliminates middlemen for more competitive wholesale prices. Support for large-volume OEM/ODM custom orders.
17 Sizes, Ample Stock — Full series of 17 sizes in stock, from 5.5mm to 32mm full coverage. Ready to ship upon order placement, meeting urgent restocking needs.
Exceeds US Standards, Worry-Free After-Sales — Full-body heat treatment exceeds ASME standards by 30%. Stable and reliable product quality with comprehensive after-sales guarantee for non-human damage.
Professional Foreign Trade Team — Years of experience in tool export, supporting FOB/CIF/DDP and other trade terms, familiar with international logistics and customs clearance processes.
Flexible Packaging, Customization Supported — Various box and carton packaging specifications available. Support custom brand LOGO, exclusive packaging design and product combination sets.
R&D Capability — Professional R&D team continuously optimizes product processes and design. Can develop custom sizes and features based on customer requirements.
Trusted by Global Customers — Products exported to Southeast Asia, Middle East, Europe, America, Africa and other countries and regions, widely recognized by overseas wholesalers and industrial clients.
Frequently Asked Questions
Q1: What material is this box end wrench made of? How is the hardness?
A: Precision forged from high-quality alloy steel with full-body heat treatment (quenching + tempering). Uniform hardness delivers performance exceeding ASME standards by over 30%, with excellent strength and toughness.
A: Precision forged from high-quality alloy steel with full-body heat treatment (quenching + tempering). Uniform hardness delivers performance exceeding ASME standards by over 30%, with excellent strength and toughness.
Q2: How many sizes are available? What are the minimum and maximum sizes?
A: The full series includes 17 sizes, from 5.5×7mm to 30×32mm, covering almost all commonly used bolt sizes in daily repair and industrial applications.
A: The full series includes 17 sizes, from 5.5×7mm to 30×32mm, covering almost all commonly used bolt sizes in daily repair and industrial applications.
Q3: What’s the difference between extra long and regular box end wrenches?
A: The extra long handle provides greater leverage and torque output, especially suitable for large bolt assembly/disassembly and deep-reach fasteners, with significant labor-saving effect.
A: The extra long handle provides greater leverage and torque output, especially suitable for large bolt assembly/disassembly and deep-reach fasteners, with significant labor-saving effect.
Q4: What surface treatment is used? Will it rust?
A: Double-layer nickel-chrome plating with fine polishing and lapping provides strong rust and corrosion resistance. Under normal use and maintenance, it resists rusting well and maintains a mirror-like appearance.
A: Double-layer nickel-chrome plating with fine polishing and lapping provides strong rust and corrosion resistance. Under normal use and maintenance, it resists rusting well and maintains a mirror-like appearance.
Q5: Do you support custom LOGO and packaging? What’s the MOQ?
A: Yes, OEM/ODM customization is supported, including laser marking LOGO, custom packaging design, and product combination sets. MOQ depends on specific customization requirements, please contact us for details.
A: Yes, OEM/ODM customization is supported, including laser marking LOGO, custom packaging design, and product combination sets. MOQ depends on specific customization requirements, please contact us for details.
Q6: What’s the purpose of the offset design?
A: The unique offset angle allows the wrench to avoid obstacles during operation, making it more suitable for use in narrow spaces. It also fits the natural hand-gripping habit for more comfortable and efficient operation.
A: The unique offset angle allows the wrench to avoid obstacles during operation, making it more suitable for use in narrow spaces. It also fits the natural hand-gripping habit for more comfortable and efficient operation.
Q7: What about delivery time and shipping methods?
A: Regular sizes are in stock and ship within 3-7 working days after payment. Multiple shipping methods available: sea freight, air freight, express delivery. FOB/CIF/DDP trade terms can be arranged per customer request.
A: Regular sizes are in stock and ship within 3-7 working days after payment. Multiple shipping methods available: sea freight, air freight, express delivery. FOB/CIF/DDP trade terms can be arranged per customer request.
Q8: Is there a quality guarantee?
A: We provide comprehensive quality assurance. All products undergo strict quality inspection before shipment. If quality issues are found upon receipt (non-human damage), please contact us for return/exchange processing.
A: We provide comprehensive quality assurance. All products undergo strict quality inspection before shipment. If quality issues are found upon receipt (non-human damage), please contact us for return/exchange processing.
