The Topeak® Bulldog STD U-Lock features best-in-class locking mechanisms and a 13mm hardened steel shackle. This lock is built to resist cutting, picking, and drilling to make sure your items stay safe.

FEATURES:

• X2P double bolt mechanism locks the shackle on both sides
• Bump-proof Z-cylinder resists picking, pulling, or drilling
• Hefty 13mm hardened steel shackle resists cutting, jacking, and prying
• Rounded design and centered keyway eliminates pry points
• Rubber coated crossbar and molded end caps protect bike frame
• Universal mounting bracket included
• 5 laser-cut keys, one with LED
• Standard size: 4.5” x 9”