The Masterlock Discus 70Mm features a tough-Cut octagonal boron-carbide shackle, 50% harder than hardened steel. The 70mm wide stainless steel body construction provides maximum weather resistance. A fully shrouded design minimizes shackle exposure and protects against bolt cutter attacks. A reinforced body bumper offers scratch resistance. The 4-pin cylinder provides increased pick resistance, and the covered keyway ensures maximum weather protection. The key retaining feature ensures the padlock is not left unlocked. The product has a lifetime guarantee.