The Emperor Smooth White Crimplock Bass Drumhead features Smooth White film with outstanding tone, articulation and projection. Combining Remo's high-tension Duralock Crimplock hoop with 2-plies of 7.5-mil and 5-mil Smooth White film, Emperor Smooth White™ Crimplock Bass Drumheads are ideal for all Marching Bass drum applications. Available in sizes 14" - 32".