G'Day Peter Thanks The size on the Primus lamp is only 17 mm with 6 mm bore, I think most Primus lamps have the same size pump. Al's photos seem the right size "small" Kerry > Hi Kerry > I also sent them an email with this photo. > > Peter > >>> >>>> http://i263.photobucket.com/albums/ii129/picjug/bucket_cup.jpg >>> >>> Al Harris