SODIAL(R) Perforated Mesh Design Floor Sink Drain Strainer 3.5 Inch Top Dia This Strainer is made of stainless steel material and perforated hole mesh design. Mesh strainers fit into kitchen and bathroom sink drains and shower /tub drain to catch food particles, hair and more before it gets into your RV's plumbing system Mesh Sink Strainer catches the tiniest particles to prevent clogged drains.