The Susato Kildare Low F# Tuneable Whistle is a two-piece cyndrical plastic whistle with a large bore and a rich tone. Includes a thumb rest and is packaged in a protective pouch. 
 
Product Features
Great session whistle
Loud, clear tone
Plastic whistles have good intonation and are not affected by temperature changes
 
Product Specifications
Black plastic
Large bore
Tuneable
Key of F Sharp
Packaged in a protective pouch
Made in: USA
 
​L-series: 
Also known as “Low Whistles” these whistles have that wonderful low, haunting tone that everyone loves. Note that the Low Whistle takes quite a bit of practice, but the rewards are well worth the effort.