Vic Firth MB3H at DC Music. Thank you for your interest in the Vic Firth MB3H. Vic Firth MB3H mallet. Vic Firth Corpsmaster Marching Bass Mallet. A nylon head with a curved playing surface for ultra-staccato sounds. The tapered shafts shift the weight of the stick towards the hand for improved balance and control. Spherical heads provide a consistent striking surface. Hard felt heads or soft felt cores covered with fleece. The superior designs of the Corpsmaster® line developed throughout years of collaboration with the world's finest drum and bugle corps. Each season since the products were introduced, Corpsmaster® sticks and mallets have remained the most popular choice among the top high school bands, indoor percussion ensembles, and DCI Championship corps.