Features: l Made of high quality material, durable and practical to use l Efficient cleaning without damaging the floor l As part of normal maintenance, it can be easily disassembled and replaced l It is warmly recommended to replace spare parts every two to three months to keep the sweeping robot at its best performance Specifications: l Quantity: 1 pair; 2 pairs (optional) l Applicable Model: for irobot Roomba i7+ E5 E6 E7 i3 Vacuum Cleaner Package Include: l 1set Side Brush