Featuring a simple, strong and aggressive design, The ultra 410 is the ideal entry level u-lock and rounds out the super ultimate and ultimate line-up in. It's simple design conceals a number of high-tech advancements in security. FEATURES: Innovative soft touch housing cover prevents damage to paint Shackle, body, and supporting elements made from temper hardened steel for cut and torsion resistance Pass-through shackle provides anti-twist protection Patented Double layered cylinder with special wafers and additional decoy cuttings protects against picking