Diaphragm, Control Block, to fit A-dec® Performer®; Pkg of 5 Sold in package of 5 (A-dec® #38.0711.01) A-dec® and Performer® 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.