One of the three kits ordered had a defective roller with a drive shaft too long to fit in a vacuum. The picture shows the original roller at the top and the new one at the bottom, note that the bottom one sticks out over the line. Easy enough to come back to. Let's see how well they actually perform in vacuum.
Xiaomi Mi Robot Vacuum-Mop 2 Lite RU robot vacuum cleaner, white
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iRobot Roomba 692: Smart Robot Vacuum with Wi-Fi, ๐ค Alexa Compatibility, and Pet-Friendly Features for Effortless Cleaning on Any Surface
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Vacuum cleaner Deerma DX700, white
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