Ahead 1.25" Chavez Arsenal Marching Bass Drum Mallets are constructed of a lightweight aircraft-grade aluminum. The shaft is ergonomically designed to fit comfortably in your hands. Additionally, the hollow shaft contains counterweights designed to help the stick rebound off of the head for clear articulation. Why perfect your rudiments only to have them cluttered by your hardware? This mallet is specifically designed for 16-18" bass drums.