The Headhunters Crossovers II Bamboo are a hickory drum stick shaft and bamboo rods. The diameter size of the shaft is similar to that of a 5B drum stick. Crossovers combine the concept of a bundled rod with a regular drumstick. After lathing the uniquely shaped shaft, a center hole is drilled to make a bulb area. The rod material (bamboo, poly, etc.) is inserted and finished with the 'Grip Control' double 'X' pattern feel.