what are the two small Orings in this gasket kit for?

[mvvette97]

Was just wondering if anybody knew what the two little O rings are for in this gasket set. I can't think of where they would even go.

http://www.ebay.com/itm/380539395875?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

 

[lbjamm]

Rocker arm shafts.