OnGuard RockSolid U-Lock – 14 mm (0.55 in) Hardened Steel Bike Lock, 90 mm × 175 mm (3.55 in × 6.90 in) Interior Dimensions, Angle-Grinder-Resistant Coating, X4P Quad Lock Security

OnGuard RockSolid U-Lock – 14 mm (0.55 in) Hardened Steel Bike Lock, 90 mm × 175 mm (3.55 in × 6.90 in) Interior Dimensions, Angle-Grinder-Resistant Coating, X4P Quad Lock Security

• Angle-Grinder Resistant Coating: Specialized exterior layer helps disrupt cutting wheels and significantly increases resistance to grinder-based theft attempts.
• X4P Quad Lock Security: Four-sided locking mechanism secures the shackle at multiple points to resist prying, twisting, and forced separation attacks.
• 14 mm (0.55 in) Hardened Steel Shackle: High-strength TriRadius steel construction resists bolt cutters, leverage tools, and sawing attempts.
• Balanced Anti-Leverage Design: 90 mm × 175 mm (3.55 in × 6.90 in) interior dimensions reduce available leverage space while securing bikes tightly to racks or posts.
• High-Security Urban Protection: Designed for high-risk areas and valuable bikes including e-bikes and commuter bikes needing advanced theft resistance.