✓The lock is built to resists being picked by a shim(a long the sides of the shackle) and also has a unique internal mechanism that is more difficult to pick.And because there is a metal barrier that blocks the shackle ,it is also more difficult to clip with bolt cutters.
✓It also has a guard which increases it’s perfection in the locking world or world of lockers for good safety.Hard to copy with high precision,it is one of the best advantage for burglar-proof locks.