ST = Super Tough. A 2-ply snare drumhead designed to be played hard and loud. Well balanced and fairly responsive for a thicker drumhead, the Evans ST gives good attack and moderate sustain.
Two plies of 7.5mil film give this drumhead warmth, durability, and a big attack. It remains fairly responsive, especially when tuned medium or high. Great for heavier hitters who need projection and also want to keep some sustain and tone in their sound. Capable of delivering big rimshots, this drumhead shines in loud environments, but is also very usable if things get a little quieter.
The Evans ST is designed for snare drums.