Easy to use: : Our 4-piece refillable K-cup is easy, without changing the f Keurig filter holder making any kind of modification, it can be seamlessly installed in every f Keurig any other beer machine.Quality: : These f Keurig K-Cups are made of high-quality materials, BPA-free, Our kcup filters are dishwasher-safe.Environmental protection: : By using our BPA-free reusable k-cup f Keurig, you are helping to reduce the costly environmental waste caused by disposable, pre-filled non-recyclable plastic coffee bags.Save money: : These refillable capsules (reusable k-cup filters) f Keurig coffee machines allow you to save up to 80% compared to pre-filled pre-made, ste-bought coffee pods.Compatible: : f Keurig 1.0, 2.0 (the old model sens may not be able to read the cup. Please return it f a refund in time) Model: K200, K250, K300, K350, K360, K450, K460, K500, K550, K560, K15, K11, K40, K44, K45, K50, K60, K66, K70, K77, K80, K100, B31, B40, B44, B50, B60, B66, B70, B77, B100, B140, B200.size:5.1x4.7x3.7CMMaterial:PPcolour:blackPackage Contents:4 Coffee cup filterOnly the above package content, other products are not included.Note: Light shooting different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.