Field Tested and Field Proven, 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. The Corpsmaster Keyboard Mallets Are Specifically Designed to Withstand the Demanding Playing and Environmental Requirements of Outdoor Performance Applications. Hard Marimba - Black Cord. L = 16 1/2"