Remo FIBERSKYN Doumbek Head DA 3387 FD. Remo S Series Doumbek Head 8 3/4 x 3/8" Fiberskyn DA-3387-FD. Fiberskyn replacement head for Copper and Aluminum doumbeks. Head has an inside diameter of 8 7/8" and a crown depth of 3/8". May not fit all doumbeks. Please measure your drum carefully.