Asec Kite Elite - Euro Thumbturn Cylinder 40 - 45 (85mm) Review

Well finished and easy to fit. The thumbturn is secured with a cotter pin rather than a setscrew, but this would not be a problem unless you need to remove it for fitting - which is unlikely as it can nearly always be fitted with the thumbturn in place. The securing screw should be lubricated with molybdenum or lithium grease to avoid getting stuck due to corrosion.