Here are a few of the production tools I have for sale.
Purchase price is $100.00 for the 3 items. E-mail
me.

This gasket cutter has little sponges in it that push out the
gasket after is is cut. It also cuts out the 1/4" through hole at the
same time. Pretty nifty huh?

This is the jig I use to hold the clean out plugs while I drill
them. It is made from PVC. The clean out plug can just slide in and
out of it. Made for mass production. The Tap jig is used in a drill
press so I can get a perfectly straight hole tapped down through the clean out
plug.