OnGuard RockSolid 8590 U-Lock - 3.55 x 6.9

Weighing only 3 pounds, this lock is the lightest angle-grinder resistant model available. It utilizes the advanced X4P locking mechanism, securing the shackle to the crossbar at four points to enhance resistance against pulling, jacking, prying, and twisting attacks. The package includes five keys and comes with OnGuard’s comprehensive anti-theft protection plan. It holds the highest security rating within the OnGuard lock lineup, making it a reliable choice for professional-grade bike security.