The PureDuck is the most versatile, user-friendly J-frame call in our line, and it's the perfect lanyard-mate to the loud cutdowns that Rolling Thunder is known for. It features a traditional 1/4" initial bore that opens up to a medium-sized bore. The PureDuck provides clean tones with plenty of range and easy transitions, from high-end hails to bottom-end feed calls. It's available in both a single reed and double reed option to suit different calling preferences.Features1/4" initial borePlenty of rangeEasy transitions