The Powermax Ebony Bass drum heads feature optimum tone control attack and projection with a reflective black finish. Constructed with a 1-ply 10-mil Ebony film with an internal inlay ring Powermax Ebony features a free-floating muffling ring with a Bottom Black Dot™ for maximum attack tone control and durability. The high-tension Crimplock hoop provides a wider tuning range and increased stability. Ideal for all Marching Bass drum applications. Available in sizes 14–32 .