A10 Filters Compatible with A10 Hero/Master and A11 Hero/Master cordless vacuum cleaners. Easy to install - Free your hands from complicated replacement steps. No additional tools needed. It is recommended to replace the A10 filter every 2 to 4 months depending on usage. Material: plastic color: as shown Package Contents: 6 x Filter Elements 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.