I have a jaccuzzi tub that is fairly new but the vertical teeth inside the large chrome on brass handle (which are plastic) that grab the stem have stripped. It is apparently one of the more difficult stems to match. I have not been succesfull locally. I think it would be classified at or near a AA size stem. I don't have any of that information since the contractor/plumber didn't save the box or model. The only info I can find on the handle itself is "SUPERGRIF" and a capital "F" inside the stem hole.

Thanks
Dt

Arcadia Plumbing supply has parts for your supergrif. Try Arcadia Series Faucets from FAMOUS PLUMBING SUPPLY (http://www.plumbingsupply.com/supergrif_arcadia.html)