They work just alright if everything is correct including the freewheel which had different synchro specific spacing for 6 and 7 and can be bit hard to find. They weren't really bad so much as disapointing considering the price when new or used now and the Campy name. If your going to go Campy for a build like this I would say either go for a few years newer and get some 8 speed record stuff or go with classic retrofriction both of which will work better and actually cost a less.