Featuring a simple strong & attractive design the new Ultra 410 is the ideal entry level D-lock & complements the Super Ultimate & Ultimate line-up. Its simple design conceals a number of high-tech advancements in security including a new double layered key with decoy cuttings & a cylinder with special wafers which make this lock virtually impossible to pick with conventional methods. Every variant is Sold Secure Silver certified. The 12mm thick double bolted hardened steel shackle extends all the way through the lock body providing excellent protection against cutting & torsion attacks in a simple yet innovative design. The Ultra 410 uses a very easy to mount rattle-free frame bracket & comes in a full range of mini & standard sizes with or without additional extension cables.