Vic Firth Corpsmaster Marching Bass Mallets Hard XX Large The Vic Firth Marching Bass Drum Mallets feature tapered hickory shafts, which shift the weight of the stick towards the hand for improved balance and control. Spherical heads provide a consistent striking surface. The MB1H was designed for 18" - 22" marching bass drums Super hard felt heads. Head size = 1 1/2" x 1 3/16", L = 14 1/8".