Features: 1.Safe Materials:These high-density mesh reusable K-cups will never rust or change color. 2.Reusable K Cups Health and Safety:The reusable design of the stainless steel K cups completely retains the natural oils and flavors of the coffee. Brew coffee with a reusable K cup with stainless steel mesh and you'll taste great coffee like you've never tasted before 3.Easy to use:Filling your own coffee capsules with coffee filters has never been easier. These don't require changing out the filter holder, just pop it into your machine, fill it with your choice of K Cup compatible coffee grounds, and let the coffee machine do the rest. 4.Save money:Using reusable K Cups will help you minimize your expenses for a single coffee capsule. 5.After-sales service: If you have any problem, please contact us immediately, we will help you solve it as soon as possible. Specifications: Size:5.3*4.2cm Material:PP+Stainless Steel includes: 4 X Funnel Cup