1. Compatible models: for iRobot Roomba i7 / i7+ / i3 / E5 / i3+ / i4 / i6 / i6+ / i8 / i8+ / E6 / E7 / J7 2. Made of high quality materials, durable and long-lasting 3. It is easy to disassemble and replace as part of routine maintenance 4. For better results, the spare parts should be replaced every 1 - 3 months 5. Fine and delicate, highly compatible with the equipment
