100% brand new and high quality Made of high quality materials, more . It is recommended to use each spare part for 3-6 months, then replace it with new spare parts. Replacing parts will help your oxygen generators maintain good performance Universal filter. Portable concentrator color: White Material: plastic Package Contents: 4 x filter 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.