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
- Select appropriate hex key size for fastener application using Klein's precision-sized markings
- Unfold required blade independently up to 270 degrees for optimal working angle and professional access
- Insert square-cut hex end fully into fastener socket ensuring complete engagement for maximum torque transfer
- Apply steady, controlled pressure while turning to prevent fastener damage and ensure Klein quality results
- Fold blade back into handle when complete, maintaining compact professional tool organization
- 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