High Performance - Easy to replace and effortless. No tools required, easy to replace the filter. Maintenance - Keep your robot in optimal working condition by changing the consumable replacement kit every 2 to 3 months, depending on your frequency of use. Package Contents: 16 high efficiency filters. Perfectly compatible with your robot vacuum cleaner. Filter is compatible with i7+(7550)/i7 i3+(3550) j7+ (7550) plus E5 E5(5150) E6 (E6198) E7 i2(2152) i4+(4550 4552) i6+(6550) i8+(8550) i1 i1+ I and J and E series robot vacuum cleaner. This set works as well as the originals, precise fit and easy installation. Material: plastic Color: as shown Package Contents: 16 HEPA Filters 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.