- Requires Master Lock One Key System (Ace No. 5171509) to set pins
- Universal pin for keying convenience
- Locks pinned to customer's key in minutes
- Laminated steel bodies for superior strength
- Hardened steel shackles for No.1 and No. 3 padlocks
- Hardened boron alloy shackle for No. 5
- Dual ball bearing locking for maximum pry resistance
- Great choice for keyed alike applications
- Uses Universal Pin Keying Tool 376
- 1-3/4" body, K1Box Key blank, Key blank not RSC stocked
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