Evans 8 Inch Genera 1 Clear Drum Head.The single-ply industry standard...G1s blend warmth, sustain, and articulation. The high-performance 10mil film ensures that the G1 is both durable and expressive. The coating adds additional warmth, focus, and depth. Evans 8 Inch Genera 1 Clear Drum Head The single-ply industry standard...G1s blend warmth, sustain, and articulation. The high-performance 10mil film ensures that the G1 is both durable and expressive. The coating adds additional warmth, focus, and depth.