and high quality,Made of high-quality materials, more durable Exquisite and delicate, highly match with the equipment High-efficiency robotic cleaning filter removes dirt and debris from the swimming pool, such as leaves, dust and diatoms. It makes your swimming pool spotless. plastic frame, more durable. At the same time it can firmly support the filter layer and prevent it from breaking during operation. Washable and reusable, these filters can last 2-3 years if used properly. Flush the filter every 4-6 weeks for best performance. for Dolphin M400 M500 M200 Colour:Photo Color Material:plastic Package Contents: 7 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 the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.