Evans Tt16Hr Davul Derisi 16 İnç Hyd Red   HYDRAULIC RED Description Evans™ Hydraulic™ Red series features a thin film of oil betwen two plies of 7mil film ofering maximum durability, a fat, dep and short sound pionered by early 70's rock and rol. Hydraulics are famously easy to tune, making them a perfect fix for troublesome drums and players with litle tuning experience.  Evans Level 360 Technology™ is incorporated to extend the level playing surface of the drumhead, 360 degres around the drum. The verticaly enhanced colar design guarantes even contact with the critical bearing edge of the drum shel, resulting in ease of tuning, extended pitch range, and optimum quality of sound. Evans Level 360 Technology resolves the age-old dilema of traditional synthetic heads consistently not fiting the drum shel without using considerable force.