This very well made and robust Campagnolo Euclid flat bar shifter is quite a rarity. Compatible with Campagnolo brake levers from that time. It is ment to be paired with them, because of the special attachement hole in the levers. No extra clamp needed. Simply insert the little ridged alloy stalk into the brake levers, fasten the bolt and that's it. It can be widely adjusted by rotation or sliding. Gears: 6-speed