Side 1:
Power Nub – Lined with rows of small, raised bumps, the Power Nub has a very sharp feel and is not for the faint of grip! This style is recommended for a strong grip.

Side 2:
Semi-Super Bump or Relaxed Finger Tip – has a smooth, rounded bump close to the front edge. When properly fit, the bump rests under 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.