Utilizing patented, heat-activated ActiveGrip solution, ProMark's Rebound 7A drumstick model is engineered to get tackier as your hands sweat and body temperature rises. These sticks are created for agility but won't tear your hands up or cause restrictions to range of movement or technique. Diameter : .535" / 13.5mm / Length: 16" / 406.4mm ProMark Rebound drumsticks feature a rear-weighted design for increased force out of the playing surface.