The 4-wheel combination key lock 30391 series is our German VDS Klasse 2 and China G.A. approved high security key lock solutions for ATMs, high security safes and vault doors with changeable key design. The keys can be changed directly without the need to disassemble the lock.
There are 11 cuttings on the wheels that increase manipulation difficulty by expert. With nearly 270 thousand of theoretical variations for key combinations available, customers are well protected from duplicate key concerns.
The 30391 4-wheel combination lock are one of the best key lock solutions for international markets due to its VdS Klasse 2 and China G.A. certifications. The standard footprint allows the key locks to be easily retrofitted with mechanical and electronic safe locks. With default mounting holes on bolt, the 30391 locks are also widely used as the override key lock system for high security safes.