The Evans Hydraulic Black Drum Head is a part of the well-known Evans Hydraulic series of drum heads featuring a thin layer of oil between the two plies to suppress overtones and improve sound quality in general. The Hydraulic head provides a fat deep sound with a short sustain ideal for a wide range of drumming styles and genres. Hydraulic heads are well known for their effortless tuning and this head is no exception. Ideal for troublesome drums or drummers with little tuning experience the Hydraulic Black Drum Head offers the best sound possible with minimal tuning.