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Titanker 10mm Bike Chain Lock, 3.3 ft, Black (TK-03-12)

$26.99 (Price correct as of 11/13/2026 12:47 PST · Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

The Titanker TK-03-12 is a black bicycle chain lock with 10 mm thick links and an overall length of about 3.3 feet. It includes two keys, a protective cloth sleeve, and a dust cover. The key can be removed only after the lock is locked. Check that the chain’s reach and link size suit your locking setup, and confirm the exact model’s weight if you plan to carry it.

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SKU: B07SW3G95T Category:

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Quick Summary

The Titanker TK-03-12 is a black bicycle chain lock with 10 mm thick links and an overall length of about 3.3 feet. It includes two keys, a protective cloth sleeve, and a dust cover. Check that the chain’s reach and link size suit the way you plan to secure your bike.

Key Details

Detail Product information and buyer relevance
Model and version TK-03-12, black with a 10 mm chain.
Chain links About 1.97 inches long and 10 mm thick. Check that the chain can pass through the parts you intend to secure.
Overall length About 3.3 feet. Compare its reach with your planned locking point.
Key operation The key can be removed only after the lock is locked. Two keys are included.
Included items One chain lock, a protective cloth sleeve, and a dust cover.

What to Compare Before Buying

  • Reach: Consider whether about 3.3 feet is enough to loop the chain through the bike and the object you plan to secure it to.
  • Link size: Check that 10 mm links fit through the parts of the bike and locking point you intend to use.
  • Carrying weight: If you plan to carry the lock on rides, confirm the weight for this exact model and decide whether it suits your needs.

What Is Included

The package includes one chain lock, two keys, a protective cloth sleeve, and a dust cover. Keeping the second key in a separate place gives you a spare.

Safe Use and Important Precautions

No bicycle lock is 100% secure. The product information advises against leaving a bike locked outdoors for long periods, especially in high-crime areas.

Care, Cleaning and Storage

Lubricate the lock hole and keyhole regularly. The chain is enclosed in a protective cloth sleeve, and a dust cover is included.

Before You Decide

Check that the chain’s approximate 3.3-foot reach and 10 mm links work for your planned locking setup. If carrying weight matters, confirm the exact weight for this model before choosing it.

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