Protective cylinder cover (rosette) DEFENDER MR500-25 Magnetic protector for locks 222-530 Defender MR500-25 Magnetic protector with rosette for locks. It can be installed on all types of locks and provides maximum anti-burglary protection for the cylinder (against break-ins by pulling, extraction, drilling, or freezing). Disassembly is only possible from the inside. The package includes 3 magnetic keys. View
