A keyed bicycle U-lock for securing a bike frame to a suitable fixed object. The Keeper Standard uses a 12 mm hardened-steel shackle with a protective coating, and includes two keys and a frame mounting bracket. A more appropriate primary bicycle lock than a thin accessory cable. Check the lock's internal dimensions against your frame and locking location; no lock guarantees protection against theft. Verify current pricing before buying.

• 12 mm hardened-steel U-lock shackle
• Protective coating around the shackle
• Includes two keys and a frame mounting bracket

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