GY6 Clutch Pulley Nut Socket
This is the socket you need if you are trying to install a new clutch or simply remove your old one on your GY6 (QMB139 QMI152 QMJ157) A lot of peeps don't have a socket this big and it’s difficult to find at your local auto parts store. This is a 39mm on one side and 41mm on the other. This works on almost all clutch pulleys. But definitely check the size before ordering. If it’s a GY6 it definitely will work.