Master Lock 878 Powder Coated Black Zinc Resettable Combination Padlock Set-your-own 4-digit combination for convenience and security 2in (51mm) wide powder coated black zinc body for durable security and weatherability Reset to any of 10,000 personalized combination - combination reset tool not required 1in (25mm) tall, 5/16in (8mm) diameter hardened steel shackle for superior cut resistance Dual deadlocking mechanism protects against prying, shimming and rap attacks