Kit of 1 central suction brush compatible with iRobot i7+ E5 E6. Fully compatible with iRobot i7+ E5 E6 Excellent quality accessories and spare parts, designed to last. Easy assembly to start enjoying the device in just one minute The replacement kit compatible with iRobot i7+ E5 E6 consists of high quality central suction rollers and is fully compatible with your robot vacuum cleaner. It is an ideal kit to keep your Roomba fully functional for 2 to 4 months. Below we detail the duration and the best way to maintain spare parts: When it comes to maintenance, the following should be taken into account: they must be maintained and cleaned regularly. Here are the ideal replacement times and their durability: Central suction brush: must be cleaned at least every 3 to 4 uses. They last 2 to 4 months depending on use.