The ProMark Rebound 5B Active Grip .535 Drum Sticks are becoming one of the most popular drum sticks. They have a larger sweet spot and increase a much more responsive and better articulation. Very well balance from top to bottom and make the feel much better to optimize speed and power. Active Grip Heat activated grip coating that grips stronger the harder you play. We here at Elizondo Music are very proud to be an authorized Pro-Mark dealer for all the products. Please visit our website for other discounts and FREE FREIGHT.