Zildjian S390 S Performer Cymbal Box Set w/ Stand and Grabber Arm 88% Copper and 12% Tin (88/12) produces the perfect balance of low, middle, and high frequencies Extensive Hammering gives these cymbals a dialed in sonic response throughout all dynamic ranges Fully Lathed top and bottom lathing and crafted to perfection in weight, feel, and sound Striking brilliant finish allows the cymbals to open up, sounding and looking great on any stage Medium Thin Weight