The removable deep basket prevents debris from clogging drain pipe. With the sealing lid which can control the flow of water. Easy to clean.304 stainless steel constructionEasy to install Easy to clean Easy to useThe strainer assembly fits 3.5"drain opening, so it works for most of kitchen sink on the market. Removable stainless steel deep basket is a special design to catch the debris from the sink, so no garbage disposal is needed if this strainer assembly is used.