ProMark's most durable Rebound 7A. FireGrain is a patented heat-tempering process that transforms ordinary hickory drumsticks into precision tools with unprecedented durability. Whlie keeping their original weight and balance, ProMark FireGrain sticks allow drumers to hit harder and play longer, naturally. No excess vibration, no space age gimmicks, just natural hickory hardened by flame. ProMark's Rebound line features a rear-wighted design for increased force out of the playing surface. Available in various diameters, finishes, and wood types including FireGrain and ActiveGrip.