Klein Tools Folding Hex Key Se...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$78.96
$28.96

Klein Tools Folding Hex Key Set 11-Piece SAE Sizes Extended Reach Reinforced Nylon Handle

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Model: 70550
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$78.96
$28.96
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Klein Tools Folding Hex Key Set 11-Piece SAE Sizes Extended Reach

Professional-Grade Folding Hex Key Tool for Precision Fastening

The Klein Tools Folding Hex Key Set delivers professional-grade hex key performance for precision fastening applications. This reinforced nylon handle folding tool features 11 extended-reach SAE-sized keys designed for electricians, technicians, and maintenance professionals, providing the reliable performance and industry-leading quality that tradesmen demand from America's most trusted tool manufacturer.

Professional Features & Benefits

Extended-Reach Performance

  • 11 SAE Hex Key Sizes - Complete range from 3/32" to 1/2" for comprehensive fastening capability with Klein quality precision
  • Extended-Reach Design - 3.5 to 4.5-inch long blades provide superior access to recessed fasteners and hard-to-reach applications
  • 270-Degree Independent Opening - High-leverage blades open independently for maximum versatility and professional working angles
  • Square-Cut Hex Ends - Precision-machined ends ensure secure, full-depth fit and maximum contact to prevent slippage and fastener stripping

Durability & Construction

  • Heat-Treated Alloy Steel Blades - Tough construction withstands heavy-duty use with Klein's rigorous durability standards for professional reliability
  • Reinforced Nylon Handle - Sturdy, comfortable grip design provides secure handling during extended use with professional ergonomics
  • Black Phosphate Finish - Corrosion-resistant coating ensures long-lasting performance in demanding electrical and industrial environments

Technical Specifications

Overall dimensions: 6.63" length x 2.13" width x 1.36" height, weight 1.09 lbs. Includes 11 SAE hex key sizes: 1/2", 3/8", 5/16", 1/4", 7/32", 3/16", 5/32", 9/64", 1/8", 7/64", and 3/32-inch. Extended-reach blade lengths range 3.5-4.5 inches. Handle material: reinforced nylon construction. Blade material: heat-treated alloy steel with black phosphate finish. Folding design with 270-degree independent blade opening capability.

Installation & Usage

  1. Select appropriate hex key size for fastener application using Klein's precision-sized markings
  2. Unfold required blade independently up to 270 degrees for optimal working angle and professional access
  3. Insert square-cut hex end fully into fastener socket ensuring complete engagement for maximum torque transfer
  4. Apply steady, controlled pressure while turning to prevent fastener damage and ensure Klein quality results
  5. Fold blade back into handle when complete, maintaining compact professional tool organization
  6. Store in reinforced nylon handle for convenient transport and job site portability

Professional Applications

Ideal for:

  • Electrical Installation - Panel assembly, conduit fittings, electrical enclosure fasteners, and control cabinet hardware
  • HVAC Systems - Unit assembly, ductwork connections, thermostat mounting, and equipment maintenance fasteners
  • Industrial Maintenance - Machinery assembly, equipment repair, motor housing fasteners, and precision mechanical work
  • Telecommunications - Rack mounting, equipment installation, cable management systems, and network hardware assembly
  • Construction Work - Structural fasteners, hardware installation, equipment mounting, and general construction applications
  • Automotive Service - Engine components, electrical systems, dashboard assembly, and precision mechanical fasteners
  • Appliance Repair - Control panel access, internal component fasteners, and precision appliance maintenance work
  • General Contracting - Multi-trade fastening applications, equipment installation, and professional maintenance tasks

Extended-Reach Design Advantage

Klein Tools engineering delivers superior extended-reach capability for accessing recessed fasteners in electrical panels, HVAC units, and industrial equipment. The 270-degree independent blade opening provides professional flexibility while maintaining Klein's precision manufacturing standards for secure fastener engagement and reliable torque transfer in demanding applications.

Why Choose Klein Tools Quality?

Since 1857, Klein Tools has maintained America's highest standards for professional tool manufacturing, combining precision engineering with rigorous testing protocols. This folding hex key set exemplifies Klein's commitment to electrical professional safety, featuring heat-treated alloy steel construction, reinforced handle design, and the trusted reliability that has made Klein Tools the preferred choice for electricians, technicians, and maintenance professionals nationwide.



KLN-70550 - spec sheet

Manufacturer Resources

Product Specs

Application:
Nut Driving
End:
Flat
Handle Length:
6.63" (16.8 cm)
Included:
(11) Fractional Inch-Sized Keys
Key Lengths:
4" (10.2 cm)
Measurement Standard:
SAE
Number Of Pieces:
11
Overall Height:
2.07" (5.3 cm)
Overall Length:
6.63" (16.8 cm)
Overall Width:
1.37" (3.5 cm)
Product Type:
Folding Hex Key
Department:
Electrical
Product Group:
Hand Tools
Product Subgroup:
Hammers & Wrenches
Product Finish:
Black Phosphate
Product Size:
1/2", 3/8", 5/16", 1/4", 7/32", 3/16", 5/32", 9/64", 1/8", 7/64", 3/32"
Product Details:
Folding Hex Key
Product Color:
Orange
Product Height:
1.3600 in
Product Material:
Handle - Reinforced Nylon; Keys - Alloy Steel
Product Weight:
1.0900 lbs
Product Width:
2.1300 in
Product Depth:
6.6300 in

Klein Tools 70550 – Frequently Asked Questions

How fast can I get the Klein Tools 70550 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools 70550 come with a warranty?
Absolutely. The Klein Tools 70550 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools 70550?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools 70550 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.