Offered up here is an original new old stock clutch adjustment screw correct or all Ducati 250cc and 350cc narrow case singles. This came from the parts bin of a dealer who carried Ducati throughout the 1960s and 1970s.    New old stock condition, just out of original packaging to be photographed. 

Please feel free to get in touch with any questions. This item ships worldwide.

Please be sure to check my other items for more hard to find European motorcycle parts.