Designed and patented in 2004, the foam core with its resilient bounce and very quiet dynamic range go to alternate to standard bundled rods for many years. This proven design is now home as Stingers in the Headhunters line up. There are 2 models available the ST11 and the ST12. The ST12 are comprised of 12 birch dowels surrounding a foam core centre. They have a very active bounce and are designed for quiet sensitive playing where speed and some technical demands like double stoke rolls are needed.