Side 1: The Power Nubs finger pad is lined with rows of small, raised bumps, it has a very sharp feel and is recommend for a strong grip.
Side 2: The Semi-Bump has a smooth, rounded bump close to the front edge of the insert. When properly fit, the bump rests between the first knuckle of the finger. It is designed for a more relaxed grip and ideal for bowlers who suffer from arthritis or have weak grip pressure.
All Turbo Quad Inserts feature a patented Glue Groove to minimize excessive adhesive from seeping to the surface.
This style is available in 19 sizes including 1/64″ or half size & 4 colors.
– Sizes 19/32 through 13/16 have O.D. of 31/32″
– Sizes 53/64 through 29/32 have O.D. of 1-1/32″
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