This locking mechanism is a great solution for industrial and scientific settings that require a high level of security. After I put it to the test, I can confirm that it is made of durable black plastic that will withstand daily use and harsh conditions. The locking mechanism is easy to install and use, providing peace of mind that items are secure. However, the only downside is that it may not be compatible with all types of equipment. Overall, a reliable and sturdy option for anyone in need of a biscuit lock.