ONGUARD 45008006M Pitbull Bicycle Lock, Black, 3.55 x 6.90 Inch

Superior Security: X4P Quattro Bolt Locking Mechanism locks the shackle at four points for maximum security. Durable Construction: Hefty 14mm thick hardened steel shackle resists cutting, prying, and jacking. Enhanced Protection: Z-Cylinder is bump-proof and resists pucking, pulling, and drilling. Versatile Locking: TriRadius shackle creates more internal space for various locking options. Complete Set: Includes 5 laser-cut keys, 1 with micro-LED, and an all-tube mounting bracket.