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