Haydels Game Calls. The CK2 features double reeds like the Redleg Mallard. This call has a carbon fiber finish that makes it stand out in a crowd. Truly one fine looking call. Specifications for Haydels Game Calls 55334: Mfg Item Num: 55334 Category: GAME CALLS Type: Duck Call Species: Duck Material: Carbon The Haydels Game Calls 55334 is a quality addition to the Haydels lineup. For more great deals on Duck Calls by Haydels please browse our Haydels Hunting Gear page.