made Of Stainless Steel.anti-rust, Scratch And Smash, Long Lasting Durability For A Long Time Use.this Spice,herb,tea And Seasoning Filter Ball Ball Is Designed With Egg Shape, Small Andexquisite,saving Space.very Convenient For Seeping Tea And Coffee.it Is Aldo With A Sturdy Hook To Attach To Your Favorite Cup Or Mug.simply Throw It In The Dishwasher For Quick & Easy Clean Up.food Grade Material.stainless Steel, Very Safe And Healthy For Daily Use.