A single Peterson Mini-knife Tool. Packaged in a plastic tube with complete instructions. Reading these instructions prior to use is recommended. The Peterson Mini Knife Tool decodes most multi-wheeled combination locks found on padlocks, briefcases, cash boxes and countless other applications. Quickly opens Master Lock Model 745 and Sesame Series 400 padlocks without decoding. Quickly decode Presto 2470 and 2620 padlocks and Realtor type key lock boxes. Slip the ratchet and bypass most handcuff locks, including "Pearless" style handcuffs. Great for single locked cuffs, even those retrofitted with secondary lock systems. Packaged in a protective plastic tube with complete instructions.