1. Material: plastic 2. Compatible with Mi 1/1S; Stone S50/S55/T4/T6/T7; Xiaowa E2/E3/E4 3. Rolling brush: wear-resistant rubber material, sawtooth pattern design, high-speed rotation can effectively decompose debris, cut hair, solve winding problems, and polish the ground at the same time 4. Side brush: The high-speed rotating side brush can sweep all the dust in the corner into the trash can 5. Filter screen: HAPE filter for purifying fine dust, the filter module is integrated and assembled, blocking 99% of fine dust of 10 microns 6. Weight: about 197 grams 7. Size: the main brush is about 185mm 8. The set includes: main brush x2; side brush x4; filter x4