From the product description, check product page for current description, price and availability:

• High quality and durable – made of quality 304 stainless steel material, 4″x10″(DiaxH) large capacity.
• Strong and durable – non-toxic, heat resistance, pressure resistance, good wear resistance, never rusted and reuseable.
• Better filtering performance – 400 micron mesh design makes the filtering more fine.
• Easy to use and storage – pour the hops into the filter and place it over the edge of your kettle through the kettle hanging hook ; Easier than beer cloth hops bags to remove, clean, and sanitize.