Most sinks will have a strainer, but over time these strainers either break or get lost. It’s very important to have a sink drain strainer to keep items like forks, knives, bottle caps, and large food scraps from going down the drain and causing damage to your pipes and plumbing system. No need to weld the sink strainer to the sink, or constantly buy replacement sink strainers. Drain Armor is the perfect, permanent locking strainer for your commercial sink that won’t get lost or broken into.