Lockpol 901P is a high security disc cylinder, specifically engineered for resistance against forced entry attacks, burglary, and vandalism. It features a patented “Sliding Double Notch” system, which consists of two serrated notches that work together to strengthen the padlock resistance against twisting, pulling, and upward tampering. It also utilizes the “Knife Point” technology, making it more resistant against forceful attacks. The disk design of this cylinder additionally provides better security by eliminating the possibility of manipulation, while the hardened steel and precision machining throughout its construction fortifies the system. This cylinder has also been tested and reconfirmed to surpass the industrial requirements for European CEN Grade 6 and CEN Grade 5 security grades.