This little baby is a
ceramic stem that replaces the worm type Gerber stem. It
has a stopping point so you know it's off and has a nice
turning motion, This stem is made by Gerber and all trim
fits on it just like the other stem. It is a washer less
stem. you will need to remove the seats to use this
stem. I personally love these stems and when ever
possible will replace the standard Gerber stems with the
Gerber ceramic stems.
Other things to note about the Gerber faucet The old faucets and the old old faucets had both hot and cold water stems turning left to open and right to close, the newer faucets, (the last 15 years I think) have the hot and cold stems turning in opposite directions. I think it is the hot that turns to the right to open and the left to close, I may have it backwards.
This type of faucet is not allowed in new construction because new codes require balance control and scald guard features, these Gerber faucets do not have them. But there is a large collection of Gerber faucets with scald guard and balance control on the market now.