ULTIMATE INTERCHANGEABLE THUMB | Thumb Installation Series

[@tgstanleyfineart]

Is there only one size outer sleeve - and both different size inner sleeves fit in the same outer sleeve?

[@spectrebowling]

The outer is 1 1/2, you can order the inner piece with either 1 3/8 or 1 1/4. See at 1:08 the difference between the two. kzbin.info/www/bejne/hISZmaGbrM6doNk

[@Swamprowdy]

Great product. The only disadvantage I see is , that like switch grips, if you have to use the tool to install/remove the inner sleeve, the tool wil mess up the tape in the thumbhole. Sinve tape is anecessary t for the right feel, I will stay with the JoPo system because the key doesn't touch the tape. Btw, some of my JoPo's turn without the tool, but some don't.

[@michaelfinley9988]

I totally agree with you. I like the JOPO design with the outer thread and tool installation not interfering with the tape. The Ultimate system is great for bowlers with longer thumbs and the only system that have no bottom tabs to break. I had an issue with both Turbo and Vise systems breaking tabs and thumbs feel loose. JOPO thumbs are very robust with thicker tabs and an outer thread securing the thumbs with zero movement. Ultimate system looks like pretty robust as well.

[@thehalfblacksnack]

You don’t have to use the tool. I’ve had these for months and don’t even own the tool

[@nickdalfonso5777]

The only other disadvantage, and this is true for all interchangeable systems, is if you resurface a ball with the outer sleeve, the slug will be higher than the surface of the ball by a bit. The easy solution sounds like you just need to sand down the slug as well. Now, that slug will be slightly lower in all of your other balls. It's almost like you have to resurface all your balls at once to prevent this. It's unavoidable, really.

[@njotosonny]

What to do when the inner didnt steady and move easy?

[@spectrebowling]

Check the tabs of the inner, maybe they are worn out. Is it the same on another ball?

[@njotosonny]

@@spectrebowling i put some paper and glue to the inner, only that has the problem, and it solved hehe thank you