Extreme Safety : Master Lock® 575DPF Square Safety Padlock, Different Key, Brass Body, 9/32 in Dia Shackle, Brass, 5-Pin Cylindrical/Dual Ball Bearing Locking Mechanism
Pocket knives: Locking mechanisms on pocket knives
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Master Lock M5XTLJ Magnum Heavy Duty Outdoor Padlock with Key, 2 Pack Keyed-Alike,Silver - Shelving Hardware - Amazon.com
LockPickingLawyer on Twitter: "I vaguely remember reading that the American Series 10 was the first production lock with a ball bearing locking mechanism… but I can't find a citation. Can anyone out
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Reliability, Safety, and Strength Realized in ATI's New Patent
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