Two orange pliers with SAE and Metric markings on a white background
Klein

Klein Tools 70552 Pro Folding SAE & Metric Hex Key Set, 2-Piece

Only 2 left
SKU: 70552
$30.98 USD

Description

Klein Tools 70552 Pro Folding SAE & Metric Hex Key Set, 2-Piece

The Klein Tools 70552 Pro Folding Hex Key Set combines 21 SAE and metric hex keys in two heavy-duty folding tools. The kit includes the 70550 SAE set with 11 fractional-inch sizes and the 70550M metric set with 10 metric sizes. Extended-reach blades measuring approximately 3.5 to 4.5 inches provide access to recessed fasteners, while heat-treated chrome vanadium steel and reinforced nylon handles deliver durable performance for professional assembly, maintenance, and repair applications.

Best Used For

  • Tightening and loosening SAE and metric hex socket fasteners
  • Mechanical equipment assembly and maintenance
  • Automotive, industrial, and workshop repairs
  • Reaching recessed fasteners with extended-length keys
  • Keeping 21 hex key sizes organized in two folding tools

Key Features and Benefits

  • 21 Hex Key Sizes: Includes 11 SAE and 10 metric sizes across two folding tools.
  • Extended-Reach Blades: Approximately 3.5 to 4.5 inches long for improved reach.
  • 270-Degree Opening: High-leverage blades open independently for versatile working positions.
  • Square-Cut Hex Ends: Provide full-depth contact with compatible hex sockets.
  • Adjustable Key Tension: A #2 Phillips fastener allows the blade tightness to be adjusted.
  • Heat-Treated CR-V Steel: Durable blades feature a black phosphate finish.
  • Reinforced Nylon Handles: Provide a sturdy, comfortable grip.
  • Side-Entry Access: Handle openings allow convenient access to outer keys.
  • Organized Folding Design: Keeps SAE and metric keys grouped in separate tools.

What's Included

  • 70550 Pro Folding SAE Hex Key Set (11 keys): 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8, and 1/2 in
  • 70550M Pro Folding Metric Hex Key Set (10 keys): 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, and 12 mm

Technical Specifications

Parameter Specification
Brand Klein Tools
Model / MPN 70552
Product Type Pro Folding SAE and Metric Hex Key Set
Number of Folding Tools 2
Total Number of Keys 21
Included Models 70550 SAE; 70550M Metric
SAE Sizes (11) 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8, 1/2 in
Metric Sizes (10) 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 12 mm
Measurement Standard SAE and Metric
Blade Material Heat-Treated CR-V Steel
Blade Finish Black Phosphate
Key Ends Flat, Square-Cut
Blade Opening Up to 270 degrees
Key Lengths Approximately 3.5 to 4.5 in
Handle Material Reinforced Nylon
Handle Color Orange
Overall Length 6.6 in (16.8 cm)
Overall Height 2.15 in (5.5 cm)
Overall Width 1.36 in (3.5 cm)
Manufacturer Weight 32.16 oz (912 g)
UPC 092644370205
Klein Tools 70552 — Pro Folding SAE and Metric Hex Key Set.

Safety: Always wear approved eye protection. These tools are not electrically insulated. Do not extend the handle length or use on energized electrical equipment.