The DISEC Sferick BDS68D1P is a passive security device designed to protect European profile cylinders installed on armored doors. Its hemispherical shape prevents the use of hole saws and resists break-in attempts such as tearing, drilling, and probing. Made of case-hardened steel, it features the Rok system with internal ribs for enhanced mechanical resistance. Fixing is done via M6 screws with a 31 mm center distance, and the external plate measures 85x65 mm. Compatible with ATRA and DIERRE locks, it is available in finishes such as polished brass PVD, satin chrome, bronze, and satin brass. Ideal for reinforcing entry-level and mid-range armored doors.