Klein Tools BLMK10 L Style Bal...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$84.53
$23.97
Klein Tools BLMK10 L Style Ball End Hex Key Caddy Set Metric 9-Piece

Klein Tools BLMK10 L Style Ball End Hex Key Caddy Set Metric 9-Piece

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Model: BLMK10
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$84.53
$23.97
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L Style Ball End Hex Key Caddy Set Metric 9-Piece

  • Warnings

    • NOT insulated. Will NOT protect against electrical shock.
    • Always wear approved eye protection.
    • Do NOT use a pipe or similar extension to increase leverage.

  • Features

    • Top-grade alloy steel
    • Heat-treated and tempered for added strength and durability
    • Made in USA
    • Extra length for hard-to-reach applications
    • Includes 9 sizes - 1.5, 2, 2.5, 3, 4, 5, 6, 8 and 10 mm
    • L-style hex keys in convenient caddy sets
    • Rust and corrosion resistance surfaces
    • Ball end works on angles up to 25-degrees
    • Each set contains a unique locking feature and marked slots for each key
    • Durable caddy keeps hex keys organized


BLMK10 - spec sheet

Manufacturer Resources

Product Specs

Item Depth:
12.5000 in
Item Height:
1.5000 in
Item Weight:
0.6200 lbs
Item Width:
3.7500 in
Department:
Electrical
Product Group:
Hand Tools
Product Subgroup:
Hammers & Wrenches
Product Weight:
9.9 oz (281 g)
Product Type:
Hex Key Set

Klein Tools BLMK10 – Frequently Asked Questions

1) What metric sizes come in the Klein Tools BLMK10 hex key set?
Nine L-style metric keys: 1.5, 2, 2.5, 3, 4, 5, 6, 8 and 10 mm. That span covers most of the set screws, panel fasteners and equipment hardware an electrician or maintenance tech runs into, and each key has its own marked slot in the caddy so a missing size is obvious before you leave the truck.
2) Can I use the BLMK10 hex keys on live electrical work?
No. The BLMK10 keys are not insulated and will not protect against electrical shock. Treat them as general mechanical hand tools only, de-energize before working, and wear approved eye protection. If you need to turn fasteners on energized gear, you need a tool rated and marked as insulated instead.
3) How far off-axis will the ball end on these Klein hex keys work?
The ball end engages at angles up to 25 degrees off the fastener axis. That is what lets you reach a set screw behind a conduit run or inside a panel where you cannot get a straight shot. For final tightening or breaking a stuck fastener, flip the key around and use the straight end square to the socket so you are not loading the ball.
4) Is the BLMK10 metric or SAE?
Metric only. The BLMK10 is the 9-piece metric set, 1.5 mm through 10 mm. If the fasteners on your equipment are inch-sized, this set will not fit them and you want a fractional-inch L-style set instead. Shops that service a mix of imported and domestic equipment usually stock one caddy of each.
5) Are these long-arm hex keys or short stubby ones?
Long arm. The BLMK10 keys are made with extra length for hard-to-reach applications, which is the point of the set for panel and fixture work where the fastener sits down in a recess. The caddy itself measures 12.5 x 3.75 x 1.5 inches, so plan for that footprint in a tool bag or drawer rather than a pouch.
6) Do the keys stay in the holder or fall out when you carry it upside down?
The caddy has a locking feature that holds the keys in place, and every key has its own marked slot so you can see at a glance if one is out. That matters more than it sounds on a service truck, where a loose fold-up set ends up scattered in the bottom of a bag.
7) What are Klein BLMK10 hex keys made of, and will they rust in a damp job box?
Top-grade alloy steel, heat treated and tempered for strength, with a rust and corrosion resistant surface finish. Made in the USA. Do not slip a pipe or other extension over the arm to gain leverage, that is how hex keys get twisted or snapped off in the fastener.
8) How much does the Klein BLMK10 hex key caddy set weigh?
About 9.9 oz (281 g) for the keys, with a shipping weight of 0.62 lbs. Light enough to live in a service bag permanently rather than only coming out for scheduled work.
How fast can I get the Klein Tools BLMK10 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 BLMK10 come with a warranty?
Absolutely. The Klein Tools BLMK10 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 BLMK10?
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 BLMK10 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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