Beast series chain locks offer the highest level of security for locking up your bicycle or powersport vehicle in high crime areas Chain cover protects paint and finishes, with an embroidered logo that won�t flake or wear off Locks use X4P Quattro Bolt (8016, 8016L) or X2P Dual Lock (8017, 8017LPT, 8018) mechanism that secure the shackle on four or two sides, respectively. Locks use Z-cylinder tumbler mechanism that is bump-proof and resists picking, pulling, or drilling Co-molded crossbar cover protects finishes and all-metal endcaps provide protection against hits and drops Automatic keyway cover helps seal lock internals against the elements 5 laser-cut keys, 1 with micro-LED --