【Perfect Compatibility】The replacement HEPA filters are compatible with Roborock Qrevo Master/ Qrevo Slim/ Saros Z70/ Qrevo Curv 2 Flow robot vacuum. Please make sure your model is correct before order. Please be noted that: This is not an OEM product. Any use of the brand name or model name is intended solely to demonstrate compatibility of this product. 【Great Value Package】This package will come with 4 pieces of high quality Qrevo Master/ Qrevo Slim robot vacuum filters. It is a cost-effective choice to supplement the replacement HEPA filters for your robotic vacuum cleaner. 【Excellent Performance】The upgraded version Qrevo Master/ Qrevo Slim HEPA filters are with stronger capabilities to filter up to 99.9% of the dirt, pollen, small dust particles and substances. It is recommended to replace the filter every 1-2 months to effectively prevent dust from entering the engine and prolong the service life of the robot vacuum. 【Premium Materials】The Qrevo Master/ Qrevo Slim filters are made of high quality environmentally friendly materials and will not have any pollution to the environment. And they are also with excellent workmanship. The HEPA filter are designed with rounded corner to avoid hurting to hands. 【Easy Installation & Buy with Confidence】The Qrevo Master/ Qrevo Slim filters are perfectly matched, which is easy to install and easy to use. We have been committed to provide all customers with high-quality, cost-effective replacement filters. Should you have any query or need, please contact us at any time and our after-sales team will provide satisfactory services to every customer. High quality HEPA filter*4/ Premium HEPA materials/ 99.9% filtration rate/ Perfectly compatible with Roborock Qrevo Master, Qrevo Slim, Saros Z70, Qrevo Curv 2 Flow robot vacuum cleaner/