The Brunswick Bionic Wrist Positioner XF offers several wrist cup and lateral positions to best suit your game. The extended index finger provides additional rotation potential. This positioner is is made of durable aluminum materials that make it lightweight and comfortable.
It helps ensure consistent lift with your fingers and if you wear a bowling glove underneath it, it's very comfortable. Recommended if you only use a half-wrist support and you know you're not catching it all at release. Remember that if you want to use one properly, have your ball measured and drilled with it ON when you have it done or you'll only be able to use this in some limited cupping positions--however, even in a lower position, it will help you lift the ball consistently, which is what I needed it for.