Zildjian 13" S Mastersound Hi Hat Bottom Cymbal Superb-sounding cymbal line for the Semi-Professional/professional musician B12 Alloy (88% Copper, 12% Tin) produces balanced low-mid-high frequencies Top-bottom lathing crafted perfectly in weight, feel, sound Extensive hammering for dialed-in sonic response through all dynamic ranges Brilliant finish - bright shimmery tone that opens up sound