1.The aluminum foil lid is compatible with coffee capsules. 2. Made of food-grade aluminum foil, environmentally friendly and non-toxic. 3. This label is used to fill stainless steel coffee capsules. 4. The capsules of the capsule machine can be reused, and you can refill empty capsules by yourself, such as stainless steel empty capsules, PP empty capsules. 5. Exquisite appearance, tightness and easy tearing effect improve product quality. Color: as shown Material: aluminum foil Size: 37 mm Package Contents: 400 x Aluminum Foil Lids Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.