Big Grommet technology is a Volkl Tennis trademarked design to give more forgiving and comfortable performance. Big Grommets allow greater string movement for an increased sweet spot.

Most tennis racquet have the pivot point of their string beds at the inside of the grommet. Strings in Volkl Tennis racquets using Big Grommet technology pivot closer to the outside of the frame because the grommets have a funnel shape -
bigger on the inside of the frame. This increases dwell time, the amount of time the ball spends in the string bed thereby enhancing spin and control. In addition, the string bed has more energy to release for more power without requiring a
bigger swing.