1. Applicable models: suitable for iRobot Roomba 5/6/7/8/9 series sweepers 2. Made of preferred materials, durable and practical 3. Exquisite and delicate, highly compatible with the equipment 4. Easy to install, as part of daily maintenance, easy to disassemble and replace 5. To achieve better results, spare parts should be replaced every 1-3 months 6. Weight: about 460g/pair (left + right wheels)
