When working with impact tools, standard chrome-plated extensions simply aren’t built to handle repeated high torque. The WNB Pro Tools WB10046 9 Piece Impact Extension Set is specifically engineered for heavy-duty use with impact drivers and impact wrenches, delivering strength, durability, and long-term reliability in demanding environments.
Manufactured from high-strength chrome vanadium steel and heat-treated for enhanced toughness, these extension bars are designed to withstand high torque loads without twisting or cracking. The premium black phosphate coating provides superior resistance to corrosion while also reducing glare under workshop lighting — a key benefit in professional automotive environments.
This comprehensive set includes three drive sizes — 1/4 inch, 3/8 inch, and 1/2 inch — each supplied in three practical lengths ranging from 50mm to 250mm. Whether you are accessing recessed bolts in engine bays, suspension components, gearbox housings, or structural fixings, this kit offers the reach and strength required.
Each extension is permanently marked with high-visibility laser-etched sizing, allowing quick identification even in busy tool drawers. The set is neatly organised in a precision-cut EVA foam tray, keeping your toolbox tidy and protecting each bar from unnecessary wear.
Designed for professional mechanics, tyre technicians, fabrication specialists, and serious DIY users, this impact-rated extension set is built to perform under pressure.
Key Features
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9 piece impact-rated extension bar set
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Suitable for use with impact drivers and impact wrenches
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1/4", 3/8", and 1/2" drive sizes included
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Lengths from 50mm to 250mm
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High strength heat-treated chrome vanadium steel
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Durable black phosphate corrosion-resistant coating
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Laser-etched high visibility size markings
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Designed for high torque and heavy-duty use
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Organised EVA foam tray storage
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Ideal for automotive, garage, and industrial applications
Technical Specifications
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Brand: WNB Pro Tools
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Model: WB10046
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Product Type: Impact Extension Bar Set
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Drive Sizes: 1/4", 3/8", 1/2"
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1/4" Drive Lengths: 50mm, 100mm, 150mm
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3/8" Drive Lengths: 75mm, 150mm, 250mm
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1/2" Drive Lengths: 50mm, 125mm, 250mm
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Material: Chrome Vanadium Steel
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Finish: Black Phosphate
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Storage: EVA Foam Tray
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Application: Impact Tool Use
What’s Included
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3 × 1/4" Drive Impact Extensions (50mm, 100mm, 150mm)
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3 × 3/8" Drive Impact Extensions (75mm, 150mm, 250mm)
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3 × 1/2" Drive Impact Extensions (50mm, 125mm, 250mm)
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EVA Foam Storage Tray
