I have put these on here so consumers who customize most likely know what they have because these are very cool and solid due to they are die cast chrome.
They are 10mm which Ruckus and most scooter are 8mm except some 150s that had lighted mirrors and retro style scooters.
We have have 8mm to 10mm adapters and mounts
They also do come left side and right side for mounting you know screwing it on on clock wise and counter clock wise, some scooters are all clock wise so you have to know this also.