Zildjian A0252 A Series 18 inch Rock Crash Cymbal is the highest-pitched with a hard, loud, crash. The A Series Zildjian is the world's most popular and versatile cymbal. Created from cast bronze alloy of 80% copper, 20% tin, and traces of silver, it is symmetrically machine hammered and lathed with a traditional wide groove. The result is an exuberant Zildjian cymbal that bursts with a classic voice that is pure, bright, and expressive.