Rebuild Kit, to fit A-dec® Century® II Block, w/o Water Retraction, (A-dec® #90.0321.00) Includes the following: Diaphragm 2 ea. 38.0054.00 9012 Diaphragm 2 ea. 38.0179.00 9046 Gasket 2 ea. 38.0186.00 9007 Compr Spring 1 ea. 013.025.00 9027 But Hd Soc Scr 2 ea. 002.097.00 9051 Stem 1 ea. 29.0831.00 9050 O-Ring 2 ea. 030.004.00 2229 A-dec® 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.