Found a site selling the ERA Maximum Security rectangular lock
1184] ERA “Maximum Security” Padlock With Magnetic and Concentric
Padlocks from SecurityForBikes, by Pragmasis
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1184] ERA “Maximum Security” Padlock With Magnetic and Concentric
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Airgas - M19411YLW - Master Lock® Yellow Thermoplastic Zenex™ 6
No Key Hole so Easier to open With a magnetic strip Two Unique Magnet Key Provided Per Lock and They DO NOT open eachother Fun and Easy to Open The
Magnetic Padlock 920C - Candado Magnetico, Abre con Llave Magnetica. Ocupa Casilleros MADOL [920C]