Cuspidor Bowls Cuspidor Screen Fits most manufacturer’s cuspidor bowls Stem 2 1/2" O.D. x 1 1/2" I.D. A-dec®, Decade® and Century® are a registered trademark of A-dec, Inc. DCI has no affiliation with A-dec and A-dec has not authorized DCI replacement parts to be used on or in connection with A-dec® products..