Evans Hydraulic series drumheads deliver deep, fat impact, without overhang. It's the classic drum sound of early-1970s rock. Constructed of two plies of thin film, Hydraulic heads are known for their ease of tuning, which makes them an ideal choice for problematic drums or novice drummers seeking instant sonic gratification. Outfit your kit with Evans Hydraulic heads, and your drums will deliver the short sustain, punchy attack, and pronounced bottom end that launched a thousand hit records.