Contour Power Grips Semi Bump Insert
The original semi bump insert. The Contour Super Soft semi features a rounded bump pitched grip designed to give you extra grip when.
One Sided insert
- Sizes 19/32 through 29/32 have O.D. of 31/32"
In running small than size
Excellent product for comfort and that little extra edge of wrapping your fingertips around the bumps at your release point. Give them a try!
Excellent product and good price. Timely delivery on a product that is somewhat hard to get.
i have been bowling with the semi bumps for @least 15 years.the best inserts for me.allow you hold on to the ball without straining your hand.