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3-in-1 Height Adjustable Electrical Weed Cutter
Trim · Edge · Strim

3-in-1 Height Adjustable Electrical Weed Cutter

★★★★★ 4.8/5 2,500+ verified reviews
£119.90 £229.00 🎉 8th Anniversary Sale
  • 50mW APex 3.2 laser that pinpoints breaks up to 50 km / 30 miles.
  • 7h rechargeable battery with USB-C charging. No disposables.
  • Universal ports: SC/FC/ST native, plus an LC adapter included.
  • Lifetime warranty against manufacturing defects, backed by Karvinger support.
Compatible with every fiber optic infrastructure Tested and certified by our Karvinger fiber experts.
🇺🇸
Proudly stocked in our U.S. warehouses Real American jobs, real local stock, and fast delivery straight to your door.
🚚 Standard FREE delivery:
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Exclusive Bundle

Everything you need, in one box

KLFO50 exclusive bundle
🎉 We are celebrating Karvinger's 8th anniversary. Enjoy a special birthday discount on the full bundle.
  • KLFO50 Visual Fault Locator50mW APex 3.2 laser engine £229.00£119.90
  • Free giftCarbon fiber premium caseShockproof field protection $19.90FREE
  • FC to LC connector adapterFull connector coverage $7.90FREE
  • Lifetime warranty + WhatsApp supportDirect line to a fiber expert FREE
Total value £256.80
Today £119.90
You save £136.90 today
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Rated 4.8/5 on
🏆 Voted Best Fiber Optic Tooling Brand 2025
James R. photo
James R.
James R.
Austin TX
★★★★★
✓ Verified buyer

Seriously bright beam and the build feels solid. The case and dust cap are a nice touch, and the charge has held up great so far.

Mike D. photo
Mike D.
Mike D.
Columbus OH
★★★★★
✓ Verified buyer

Great little tool. The light is very bright and it does exactly what I need.

David O. photo
David O.
David O.
Portland OR
★★★★★
✓ Verified buyer

Been running it on the job for a few weeks. The rechargeable battery is a game changer and the beam is so bright I can spot it outdoors, even shining out of fiber lying on the ground from a distance.

Scott L. photo
Scott L.
Scott L.
Phoenix AZ
★★★★★
✓ Verified buyer

Works great, no complaints at all.

Kevin T. photo
Kevin T.
Kevin T.
San Diego CA
★★★★★
✓ Verified buyer

This is my third one now. Lost one, gave one away, and grabbed another as soon as it was back in stock. The quality keeps me coming back.

Liam P. photo
Liam P.
Liam P.
Boston MA
★★★★★
✓ Verified buyer

Strong output for the price. Easy to trace a fault, even through a splitter.

Henry K. photo
Henry K.
Henry K.
Nashville TN
★★★★★
✓ Verified buyer

Finding a break in a fiber run would be nearly impossible without one of these. Accurate, dependable, and being rechargeable means I can take it anywhere with no cable tying me down.

Carlos M. photo
Carlos M.
Carlos M.
Miami FL
★★★★★
✓ Verified buyer

Comes with the adapters you need and the beam is plenty strong to pin down faults.

Erik N. photo
Erik N.
Erik N.
Minneapolis MN
★★★★★
✓ Verified buyer

Tested it against a set of dummy circuits and it found the fault every single time. Worth the money.

Paul S. photo
Paul S.
Paul S.
Seattle WA
★★★★★
✓ Verified buyer

Solid aluminum body, no heat issues, charges over USB-C, and the case is great. The output is a nice even pattern that lights the fiber uniformly.

Tom B. photo
Tom B.
Tom B.
Denver CO
★★★★★
✓ Verified buyer

Finally replaced my old AAA powered VFL with this rechargeable one, and it even came with a case. Perfect for identifying fiber ports on long runs. Recommend.

Nathan F. photo
Nathan F.
Nathan F.
Atlanta GA
★★★★★
✓ Verified buyer

We use pricey units at work for long runs, but for quick short runs this does the job perfectly without tying up the expensive gear.

Brian H. photo
Brian H.
Brian H.
Dallas TX
★★★★★
✓ Verified buyer

It is not a high end Fluke and does not pretend to be, but it works flawlessly for what it is. Convenient, easy to use, and a great value addition to the tool bag.

Logan M. photo
Logan M.
Logan M.
Chicago IL
★★★★★
✓ Verified buyer

Built like a tank and the battery easily lasts a full day of testing. USB-C charging beats chasing down spare batteries every time.

Greg P. photo
Greg P.
Greg P.
Charlotte NC
★★★★★
✓ Verified buyer

Bright enough to trace through connectors and splitters without guessing. It lives in my bag now and I reach for it on almost every call.

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Karvinger technician in the field
Detection Power

Find faults up to 50 km / 30 miles away

Driven by the APex 3.2 laser engine, engineered specifically for fiber optics, the KLFO50 delivers a stable 50mW @ 650nm beam that reveals even the faintest reflection across long haul spans.

Spot bad connections, macro bends, micro breaks and full cable cuts in seconds. Switch between continuous and flashing (2 to 3 Hz) modes to match any diagnostic scenario, and tackle every intervention with total confidence.

Engineered and certified to standard
APex 3.2 Laser Tech ISO 9001 IEC 60825-1 Class 3R Telcordia GR-326 CE FCC RoHS
1

50 km Detection

50mW output locates the smallest faults, bends and breaks over long distances.

2

Aerospace Aluminum

Aircraft grade alloy shell. Shockproof, crush resistant and far tougher than plastic locators.

3

7h Rechargeable

Built in USB-C battery ends disposables. Field replaceable when needed.

4

Universal Ports

SC / ST / FC compatible tip plus an included FC to LC adapter for any job.

5

Dual Modes

Switch between continuous and flashing light to match your diagnostic needs.

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As featured in

Product detail image
Endurance and Build

Say goodbye to disposable batteries

Power through your workday with a built in rechargeable lithium cell delivering up to 7 hours of continuous use on a single charge. Recharge anywhere via USB-C: wall socket, laptop, car or power bank. No more hunting for spare batteries mid job.

Machined from a single block of aerospace grade aluminum, the same alloy trusted in aircraft, the KLFO50 shrugs off drops, crushing and harsh job sites that destroy plastic locators. A dust capped optical output, adjustable wrist strap and premium carbon fiber case complete a tool built to last for years.

Laser output
50mW, 650nm red
Wavelength
650nm ±10nm
Detection range
up to 50 km
Modes
Continuous / Flashing
Battery
Li-ion, 7h runtime
Charging
USB-C
Body
Aerospace aluminum
Dimensions
5.71 × 1.18 × 1.18 in
Connectors
SC/FC/ST + LC adapter
Fiber
Singlemode and multimode
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Real human support

Talk to a fiber expert, not a bot

Peter, our in house fiber expert, is available 8am to 6pm, Monday to Saturday to answer your technical questions before and after you buy.

Peter

Peter, Fiber Expert

8am to 6pm, Monday to Saturday

Reach us anytime on WhatsApp or by email at support@karvinger.com. We usually reply within a few hours.

Answers

Frequently asked questions

How far can the KLFO50 really detect a fault?
The 50mW APex 3.2 laser produces visible red light traceable up to 50 km (about 30 miles) on standard singlemode fiber. Real world range depends on fiber type, splices and connector loss, but the high output makes faint bends and micro breaks far easier to spot than 1 to 10mW units.
Which connectors and fibers is it compatible with?
SC, FC and ST natively via the 2.5mm universal tip, plus an included FC to LC adapter for 1.25mm LC connectors. Works on both singlemode and multimode fiber.
Is the laser safe to use?
It is a Class 3R 650nm visible red laser compliant with IEC 60825-1. Never look directly into the output or aim it at anyone's eye. Always cap the port when not in use.
How long does the battery last and how do I charge it?
Up to 7 hours of continuous use per charge, recharged via standard USB-C from a wall plug, laptop, car or power bank. The cell is field replaceable.
I have never heard of Karvinger, can I trust this store?
Karvinger is a specialist fiber optic tooling brand with 2,500+ verified reviews and a 4.8/5 Trustpilot score. Every order is backed by a lifetime warranty, a price match guarantee, hassle free returns and secure checkout (Visa, Mastercard, Amex, Apple Pay, Google Pay).
How fast is shipping and what does it cost?
Orders ship within 1 to 2 business days. Standard shipping is free, express is available at checkout. Most customers receive their order in 2 to 5 business days.
What is your return and warranty policy?
Every KLFO50 includes a lifetime warranty against manufacturing defects plus easy returns and exchanges with step by step guidance. Reach our support team any time if something is not right.
Is the product authentic and new?
Yes. Every unit is brand new, unused and unopened, shipped from authorized stock with an authenticity guarantee and warranty card in the box.
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In their words

Customer video reviews

Marcus, Network Tech
Daniel, FTTH Installer
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Chris, Data Center Tech
Steve, Network Installer
Mark, FTTH Installer
Karvinger authenticity guarantee

Authenticity Guarantee

Warning: many counterfeits circulate online.

We guarantee the authenticity and superior quality of every KARVINGER product.

To avoid any counterfeit, make sure you order only from our official site: karvinger.com

Meet us in person

Find Karvinger in the field

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ISE Expo, Nashville

Meet us at the next edition with live product demos at our booth.

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Innovations World 2025

Catch Karvinger among the showcased innovators this year.

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£119.90 Add to cart

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