Remo WEATHERKING world percussion drum heads rely on the same open channel system that has established the drumset heads as the benchmark since 1957. Skyndeep is a method of graphic infusion of pigment into a polyester surface making it uniquely attractive while maintaining the integrity of a great sound drum-head. The graphic on these heads is a representation of a fishskin pattern. The head has a 8 and 3/4 inch inside diameter and a 3/8 inch collar.