Micro Fine Mesh Baskets with Lid Micro Fine Baskets are used for delicate Micro Instruments and parts washing, sterilization and storage. Our Micro Fine Mesh Baskets are: Manufacture in stainless steel grade AISI-304. Top and lid frame wire diameter 3.5 mm Micro fine mesh with opening square 1.0 mm and wire diameter 5.0 mm Wire locking Clip. Electrolyte Polish.