hieftain Thunderbird Alto Tuneable F Whistle design alloy flageolet in two parts with tuning slide - This is one of our most popular Items! Product Features - ¥Easy blow mouthpiece, UK designed and made ¥Rich full tone and volume ¥Closer hole spacing makes the Chieftain Whistles easier for those with smaller hands Product Specifications ¥Alloy Whistle ¥Tenor ¥Key of Low D ¥ Tunable ¥ Weight: 0.30 kg (approx) ¥Made in: United Kingdom Chieftain Whistles The best and most popular alloy whistle on the market - a must have