Sargent and Greenleaf 6730-100 Safe Lock Kit,Sargent and Greenleaf,6730-100" /> Three combination wheels for 1,000,000 possible combinations. Integral relock trigger thwarts punch attacks. UL Listed Group 2 lock. Matches the mounting dimensions of most mechanical and electronic safe locks Patented S&G torque adjuster enhances security by maintaining proper wheel pack tension. Brass lever with metal wheels (brass and aluminum) for long, dependable life.