As a lock, the size of the lock cylinder is very important, so which of the smaller 70 and larger 70 cylinders is better? The editor recommends Lelang Hardware's RCR-02 half-opening screw lock cylinder. The advantage of this lock cylinder is that it is not limited to small 70 and large 70 sizes. If customer needs, it can be customized to 60-140mm long The lock core is suitable for European standard lock bodies, home indoor toilets, and office toilets (after the inside is locked, the door can be opened with objects such as coins).