Klein Tools Hex Key Set 9-Piec...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$87.21
$36.04
Klein Tools Color-Coded Extra-Long L Style Hex Key Caddy Set, SAE, 9-Piece

Klein Tools Hex Key Set 9-Piece SAE Ball-End Extra-Long L-Style Color-Coded Caddy

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Model: BLS9
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$87.21
$36.04
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Klein Tools Hex Key Set 9-Piece SAE Ball-End Extra-Long L-Style Color-Coded Caddy

Professional-Grade Hex Key Tool Set for Precision Fastening

The Klein Tools Hex Key Set 9-Piece SAE Ball-End Extra-Long L-Style Color-Coded Caddy delivers professional-grade hex key performance for precision fastening applications. This steel construction hex key set features ball-end design and extra-long arms 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

Ball-End Precision Performance

  • Ball-End Design - Allows working at angles up to 25 degrees for accessing hard-to-reach fasteners with Klein precision engineering
  • Extra-Long Arms - 30% longer than standard hex keys providing greater reach and leverage for professional applications
  • Heat-Treated Steel Construction - Tempered for added strength and durability ensuring long-lasting Klein Tools reliability
  • Round Shaft Design - Enhanced comfort during prolonged use with plastic sleeve protection

Organization & Durability

  • Color-Coded Identification - Quick size identification with color-coded sleeves for efficient professional workflow
  • Folding Caddy Case - Compact storage solution that interlocks with other Klein hex key sets for organized tool management
  • Black Phosphate Coating - Rust-resistant finish on every key ensuring long-term Klein quality performance

Technical Specifications

Complete 9-piece SAE hex key set includes sizes: 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", 1/4", 5/16", 3/8". Overall dimensions: 9.28" length x 3.85" width x 1.24" height. Weight: 1.48 lbs. Steel construction with black phosphate finish. Key lengths range from 4.5" to 8.78" for extended reach applications. Orange color-coded caddy case for easy identification.

Installation & Usage

  1. Select appropriate hex key size using color-coded identification system for quick professional selection
  2. Insert ball-end into hex socket, utilizing up to 25-degree angle capability for difficult access points
  3. Apply steady rotational force using extra-long arm leverage for efficient fastening or loosening
  4. Use round shaft design with plastic sleeve for comfortable grip during extended professional use
  5. Return hex key to organized caddy position maintaining Klein Tools systematic organization
  6. Store folding caddy in compact position for efficient tool storage and transport

Professional Applications

Ideal for:

  • Electrical Panel Work - Accessing hex bolts in tight electrical enclosures and control panels with precision
  • HVAC Installation - Fastening hex bolts on air conditioning units, ductwork, and ventilation systems
  • Industrial Maintenance - Servicing machinery, equipment, and industrial systems requiring hex fasteners
  • Telecommunications Equipment - Installing and maintaining communication equipment with hex bolt connections
  • Construction Assembly - General construction applications requiring reliable hex key fastening tools
  • Automotive Electrical - Working on vehicle electrical systems and components with hex fasteners
  • Commercial Electrical - Large-scale electrical installations requiring professional-grade hex key tools
  • Precision Electronics - Delicate electronic equipment assembly and repair with ball-end access capability

Ball-End Technology Advantage

Klein Tools ball-end hex key design provides superior access to angled fasteners up to 25 degrees, eliminating the need for perfect alignment while maintaining full torque capability. The extra-long arm design delivers 30% more leverage than standard hex keys, reducing effort and increasing efficiency for professional applications. Heat-treated steel construction ensures consistent performance under demanding electrical and construction environments.

Why Choose Klein Tools Quality?

Since 1857, Klein Tools has maintained America's highest standards for professional tool manufacturing, delivering precision-engineered hex key sets that meet the demanding requirements of electrical contractors and maintenance professionals. Each hex key undergoes rigorous testing protocols and quality control measures, ensuring the reliable performance and durability that electrical professionals trust for critical fastening applications in challenging work environments.



KLN-BLS9 - spec sheet

Manufacturer Resources

Spec Sheet

Product Specs

Application:
Tightening or Loosening Screws or Hex Bolts
End:
Ball
Key Lengths:
4.5" to 8.78" (11.4 to 22.3 cm)
Measurement Standard:
SAE
Number Of Pieces:
9
Overall Height:
1.24" (3.1 cm)
Overall Length:
9.28" (23.6 cm)
Overall Width:
3.85" (9.8 cm)
Product Type:
Caddy Set
Department:
Electrical
Product Group:
Hand Tools
Product Subgroup:
Hammers & Wrenches
Product Finish:
Black Phosphate
Product Details:
Caddy Set
Product Color:
Orange
Product Height:
1.2400 in
Product Material:
Steel
Product Weight:
1.4800 lbs
Product Width:
3.8500 in
Product Depth:
9.2800 in

Klein Tools BLS9 – Frequently Asked Questions

1) What hex sizes come in the Klein BLS9 9-piece set?
The Klein BLS9 covers nine SAE (inch) sizes: 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16 and 3/8 inch. It's an inch-only set, so if you're working on metric fasteners this one won't help you.
2) Will ball-end hex keys reach a set screw I can't get square onto?
That's exactly what they're for. The ball ends on the BLS9 let you drive at angles up to 25 degrees off axis, so you can get into a hex socket you can't line up straight with, like a set screw behind an obstruction in a panel. For full torque on a stubborn fastener, use the straight end of the key instead of the ball.
3) How long are the arms on these Klein extra-long hex keys?
Key lengths run from 4.5 inches on the smallest up to 8.78 inches on the largest, about 30 percent longer than standard L-keys. The extra length buys you reach down into enclosures and more leverage on the big 5/16 and 3/8 sizes.
4) Does this hex key set come with a case, and how big is it to carry in a tool pouch?
It ships in a folding orange caddy that holds all nine keys. Closed, the caddy measures 9.28 x 3.85 x 1.24 inches and the whole set weighs 1.48 lbs, so it drops into a pouch or bag without much bulk. The caddy also interlocks with other Klein hex key caddies if you carry an inch and a metric set together.
5) Is a 9-piece SAE ball-end set enough for electrical panel and MRO work, or do I need metric too?
For panelboard lugs, enclosure hardware, and most North American equipment set screws, the 7/64 through 3/8 inch range here covers it, and the ball ends plus long arms are aimed at reaching fasteners inside enclosures. Imported HVAC, drives, and machinery often use metric hex, so plan on a separate metric caddy alongside it if you service that equipment.
6) How do the color-coded sleeves work on the Klein BLS9, and do they get in the way?
Each key carries a colored plastic sleeve on the round shaft so you can grab the right size by color instead of squinting at a stamp. The sleeve sits on the shaft, not the working end, so it doesn't interfere in a socket, and it makes the key easier on the hand when you're turning a lot of fasteners.
7) Will these hex keys rust in a service truck or a damp mechanical room?
The keys are heat-treated steel with a black phosphate finish, which is a rust-resistant coating rather than bare tool steel. It handles normal truck and mechanical-room exposure fine; wipe them down after wet work and the phosphate stays intact.
8) What is the Klein part number for the 9-piece extra-long SAE ball-end hex key caddy set?
Order it as Klein Tools BLS9. That's the SAE ball-end extra-long L-style caddy set with nine keys in the orange folding caddy.
How fast can I get the Klein Tools BLS9 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 BLS9 come with a warranty?
Absolutely. The Klein Tools BLS9 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 BLS9?
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 BLS9 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.
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