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Master Lock Letter Lock &#8482; is a popular combination lock with easy to dial and remember 3-letter combinations (patent pending). Every indicator is clearly labeled with bold letters printed on the dial. Easy to remember phrase included with each padlock for additional convenience. U.S. Patent No. 8,099,985 BlockGuard&#174; Dual Protection Anti-Shim Technology withstands attempts to violate the latch mechanism; Foreign patents pending. 1585 and 1572 include combination chart to facilitate lock system administration. 1572 locks do not have a control key for supervisory access. 1-7/8" (48mm) wide double -reinforced stainless steel body withstands abuse. Hardened steel shackle. Notes :<ul style="margin-top:0px; padding-top: 5px; padding-bottom: 5px;"><li>All Master Lock Locks are NOT Returnable.</li><li>Master Lock Lockers' Locks may only be purchased through an official business or organization account.</li><li>Please indicate if the lock is a New or an Existing key system by selecting "Master Lock" in the drop-down field. </li><li>If you have an Existing key system, the Control Key number must be specified in Key Number field. </li><li>If you need a New key system, a Control Key must be ordered separately. Select the Control Key Model and Qty from the list on the right side of the screen under "Customers Who Bought This Item Also Bought", or Call for details. </li></ul>

Master Lock® Letter Lock 3-Letter-Combo 1-1/2" Inside Shackle,

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Master Lock® No. 1572LF 3-Letter Combo Padlock 1-1/2" Inside Shackle, Control Chart, Blk Dial - Pkg Qty 6