Class A lock core: low anti-theft level.
Although the A-class lock core is an ordinary lock core, its anti-theft level is low and it is not safe enough. Therefore, we do not recommend using it.
Class B lock core: high safety factor.
Class B lock core is a lock core with high safety factor. They have double-row marble grooves, and the key design is unique, which not only improves the grade of the lock core of the security door, but also has three models of computer double-row, double-sided blade and double-row crescent. They can guarantee 15 minutes of anti-prying performance and make your home safer. Now many communities and families have chosen this kind of lock core.
Super B lock cylinder: safe and reliable
Super B lock cylinder is a safer and more reliable lock cylinder. Their lock cores are prismatic, and the key shape is single-sided blade internal milling groove or external milling groove. After many tests and research, the anti-pry time of this super B-class lock core is as long as six hours. If the thief forcibly opens it, the lock core will automatically get stuck and cannot be opened. They are ideal for shops, enterprises and factories. They are safe and reliable, so you can use them with confidence.