Zildjian K Constantinople Hi-Hats. The lightest, darkest HiHats currently in the K Zildjian range. The deep, dry and shimmering sounds developed by Kerope Zildjian in 19th Century Turkey continue to inspire drummers today. Elaborate hammering and lathing work our secret alloy into versatile cymbals with a wide-ranging blend of high and low frequencies that can be mellow or intense. For more information, visit www.zildjian.com.