Commercial grade padlock features superior protection from drilling and prying. 44mm with laminated steel body for superior strength. 15/16" (24mm) tall, 5/16" (8mm) diameter hardened steel shackle for superior cut resistance. Dual locking levers provide extra pry resistance. Non-rekeyable, 4-pin W1 cylinder helps prevent picking. Minimum order is 15 locks. If you need your new key controlled locks to work with an existing lock system, please specify your current control key number on your order.