• 16.8mm massive ultra-hardened tri-radius steel shackle provides maximum cut resistance
• Z cylinder offers optimum resistance against physical attack and picking
• Reinforced sleeve over crossbar and cylinder for additional security
• Triple layer steel crossbar
• Quattro bolt locking mechanism with dual lockdown protection provides unequaled strength by locking the crossbar to the shackle on 4 sides, maximizing pull resistance
• Rotating dust cover protects cylinder
• Protective vinyl coating on shackle
• Double rubber coating on crossbar
• Anti-theft protection plan