Choose 13? diameter for more control and articulation or 14? diameter for Zildjian S Series Mastersound Hi-hats feature a hammered outer edge bottom cymbal which not only prevents air lock but creates a lively fast ?chick? sound and an overall balanced tonal presence. S Zildjian is an expressive family of cymbals with a balanced frequency response making it suitable for a variety of musical styles. It features a B12 alloy coupled with cutting edge modern manufacturing techniques that produce a cymbal capable of a wide range of musical expression. Choose 13? diameter for more control and articulation or 14? diameter for a versatile range of frequencies and full-bodied response. B12 Alloy 88% Copper 12% Tin ? produces the perfect balance of low middle and high frequencies. Fully Lathed Top and bottom lathing ? crafted to perfection in weight feel and sound. Extensive Hammering Gives these cymbals a dialed-in sonic response throughout all dynamic ranges. Brilliant Finish Invented by Z