Piston Assembly (A-dec® #22.0081.00), to fit A-dec® Foot Control I Fits A-dec® Foot Control #38.0050.00 Prior to 1980 A-dec® is 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.