and high qualityMade of high-quality materials, more durableUniquely designed brushes with rubber treads to adapt to different floor surfaces that remove everything from small dust to deposits.As part of normal maintenance, it can be removed and replacedIt is to replace spare parts 2 to 3 months to keep the machine running at performanceColour:greenMaterial:rubberPackage Contents:3pair x roller brushOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.