Ahead Drumsticks come with a built-in Vibration Reducing System (VRS) to reduce hand fatigue and allows you to play longer and faster. These sticks have a precision crafted alloy core to guarantee weight and balance varaition of less than 1%, compared to wood at potential variations approaching 20%. The nylon tips are designedfor super high impact and can be changed to different shapes to fit every style of play. Ergonomically tuned handle diametersSuper hare replactment polyurethane covers protect both the sticks and the gear