13" EC Reverse Dot Snare/Tom/Timbale Evans™ EC™ snare heads feature two plies of film. The combination of a 7mil top ply and and a 10mil bottom provides a controlled sound but with resonance and sensitivity at all tuning and dynamic ranges. Sound Shaping Technology™ (SST™) rings on the underside reduce unwanted frequencies and enhances attack. The Reverse Dot lends extra durability, focus and attack in the center.