These 3 Shind stainless steel tea infuser, also referred to as a tea ball strainer. It is designed to steep loose-leaf tea and can also be used for infusing spices or herbs in various culinary applications like soups or stews. Key features include: Material: Made from durable, rust-proof stainless steel for longevity and easy cleaning. Design: Typically features a fine mesh to effectively filter out tea leaves or spice particles, ensuring a clear infusion without residue. Convenience: Designed for ease of use, often including a chain and hook to hang from a cup or teapot, and is generally dishwasher safe for simple cleanup. Versatility: Suitable for a wide range of loose-leaf teas and can also be used for infusing spices in cooking. Set contains 3 different sizes of balls . The sizes are 52mm,4mm,35mm.