Promark ActiveGrip Rebound 5A Drum Sticks Drumsticks Acorn TipRebound Balance ActiveGrip Acorn Tip Drum Sticks 5A Wood. ActiveGrip is a heat activated grip solution that's engineered to get tackier as a players hands sweat and their body temperature rises. It applies like a traditional lacquer adding no additional diameter or weight to the stick. Unlike most grip alternatives on the market ActiveGrip doesn't tear up players hands or cause restrictions to range of movement or technique. Length 16" Diameter . 565"