Evans Hydraulic Red Bass Drum Head, 20 Inch Drums & Percussion Rigid top and bottom covers

Rigid top and bottom covers provide support and protection

Bumper protected valance

and the need for batteries

Smooth gear adjustment system allows quick and accurate pressure control with minimal effort

Evans Hydraulic Red Bass Drum Head, 20 Inch Drums & Percussion Rigid top and bottom coversFeatures Made with a thin layer of oil between two plies of film to suppress unwanted overtones Two plies offer consistency and durability for longer playing time A fat, deep, and short sound pioneered by early 70''s rock and roll Available in 4 different colors Exclusive Evans Level 360 Technology collar design ensures proper contact between drumhead and drum shell Specifications Treatment: Clear Ply: 2 Technology: Hydraulic WATCH: Hydraulic Series