Master Lock combination lock, three-number dialing and 1,500 combinations for maximum security. Use on lockers, bikes and sports bags. Durable metal construction for greater strength. Automatic locking lever assures a second shackle when closed. Lock combination automatically scrambles upon lock closure for extra security. Worlds best-selling combination lock from the worlds largest padlock manufacturer. All Master Lock combination locks are individually tested for strength and durability, and each offers a limited lifetime guarantee.Bright metallic color makes locker identification easy1-7/8 (48mm) wide metal bodyAluminum cover with durable anodized finish and silver dialColored numbers and tick marks for modern, high-tech appealHardened steel shackle for extra cut resistance