This security lock is made with security conscious mindset. Steel lock body with stainless steel shackle for maximum protection against sawing, prying and rust. It is particularly designed for security, containing a good character specially suitable for important places warehouses, offices, homes and others. The internal construction of the lock has been innovated and mordified from the usual ball to the special multiple layered one. In effect the versatile key can not open the lock in any way.