OnGuard Bulldog Mini U-Lock may be mini, but it's certainly mighty, offering security for your bike and a compact size for easy transport and storage.

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The full-size and strong Blackburn Folsom U-lock uses a hexagonal shackle shape and dual-bolt design to supply security for your bike.

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The OnGuard Bulldog STD U-lock delivers moderate security for your bicycle, resisting many types of attacks to help keep your beloved ride protected.

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Featuring a long shackle, the OnGuard Bulldog LS U-lock provides a little bit of extra length to make it easier to secure your bike.

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This Kryptonite KryptoLok Series-2 Mini-7 U-lock delivers high security in a compact design, helping keep your bike protected.

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The Kryptonite KryptoLok Combo U-lock offers a key-free bicycle security option for low to moderate crime areas.

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This Kryptonite KryptoLok Series 2 U-lock with Flex cable is a convenient combination for deterring bike theft.

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The OnGuard Pitbull(TM) U-lock uses hardened steel and a pick-proof lock to protect your ride like a viscious dog.

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The Pitbull DT U-Lock with the X4 Power Quattro Bolt Locking mechanism provides unequaled strength by locking the crossbar to the shackle on 4 sides, maximizing pull resistance.

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Small and mighty, the Kryptonite Evolution Mini-5 U-lock delivers great theft protection in a compact, easily transportable design.

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