This is a Sleek Design with Ultra Fine Mesh that Ensures a Particle Free Steeping‎.‎ Its  Made of grade 304 stainless steel‎:‎ high‎-quality material that makes these tea balls safe to use‎,‎ durable and resistant to rust‎.‎ It also Features chain and a twist lock mechanism with a large size giving your tea room to expand‎.‎ Perfect for medium to large tea leaves but NOT suitable for ground tea or very fine tea leaves‎.‎ Fits the Majority of Cups & Mugs‎,‎ Make the perfect tea every time  in just three simple steps ‎-‎- Stainless Steel Tea Infuser makes it so easy‎,‎ Measure the perfect amount of tea every time with our specially designed infuserAllow the water to perfectly steep your tea with our high capacity design that promotes water flow‎,‎ Finally remove the infuser‎,‎ relax‎,‎ and enjoy ‎- when your done our infuser is easy to clean‎.‎