dnfsdd8aa92
@dnfsdd8aa92
有効 (1年, 6か月前)ジャニラブポイント： 6
Mechanical locks are the backbone of your security system. There are three types of tumbler locks: pin-tumbler, disk-tumbler, and lever-tumbler. Pin-tumbler locks are the most common. The tumblers in this type of lock are small pins. The modern door lock is a compact pin-tumbler cylinder lock of the type developed (1860) by the American […] 表示
