This package includes 500 pieces of smoking screens, they are very useful for smoking enthusiast, giving you enjoyable smoking experience. The pipe mesh screens can prevent the hot and embers from entering the pipe, making the pipe easier to clean. This set of smoking screens is in round shape,common and general for fitting most smoking pipe or bowl. The pipe screens filters effectively allow free flow of smoke and air while keeping dirty, harmful from pulling through your pipe. These pipe screen filters are made of stainless steel, quality and durable, can resist rust and erosion.