We've not only reduced our price on these, but added more shims to the kit. The reason? We now make them ourselves. Produced on a precision screw machine, these shims are of the highest quality. Now that we don't pay a fortune for them you don't have to either.

This kit is intended for the big -8 check valves commonly used for port nozzles.

Includes SIX .020", FOUR .060", and ONE .187" shims.