Interchangeable Thumbs

I recently had five balls fitted with a Roto-grip interchangeable thumb. I’ve been thinking about it for some time now and finally did it and am I glad I did. It give me a common feel for all five balls. I don’t have to use tape on all five balls. I just tape the one interchangeable thumb and I’m ready to go for the day or night. I would highly recommend this to everyone.