Specifications Material:ABS Plastic Hign-concerned Chemical:None Vacuum Part Type:BRUSHES Model Number:For DEXP MMB-300 Type:Vacuum Cleaner Parts Compatible Models For DEXP MMB-300 Notice Before placing an order,be sure to confirm that your device models, the relevant fit model mentioned on this product page, you can check the specific product model number on the nameplate at the bottom of your device (many sweepers have extremely similar names, so you need to distinguish by the specific model number), if you are requesting a refund due to your purchase of the wrong product,you will be responsible for the return shipping costs. Shipping Information All of our products support DropShipping, if necessary, you can contact customer service! Before placing an order, be sure to confirm that your device model is the relevant fit model mentioned on this product page, you can check the specific product model number on the nameplate at the bottom of your device (many sweepers have extremely similar names, so you need to distinguish by the specific model number), if you are requesting a refund due to your purchase of the wrong product, you will be responsible for the return shipping costs. 1,This is not a Xiaomi or Roborock genuine /original products,what we sell are brand new compatible replacement type. 2,Package include all kits show in picture which option you selected above. 3,If package lost or broken in transit ,we will refund money to you,you should contact us ASAP. 4,.Please contact us before leaving any negative feedback or opening any dispute on AliExpress.We will help you to resolve the problem. 5,Please give us the opportunity to resolve any problem.We understand the unhappiness you might have if the order go wrong,but we will try our best to give you the satisfying results. 6,All accessories in my store are washable. Before you place the order, you can check if you have received the store coupons,follow our store to receive an exclusive fan coupon.