The MK Kelpie Low D Whistle is a professional-grade instrument made of high-quality aerospace grade 6000 series anodised aluminium in a sleek black satin finish. This whistle, designed by MK Kelpie in the United Kingdom, offers a low pitch and comes with a D key for easy playing. With its lightweight design weighing 13.4 ounces, this whistle is perfect for musicians looking for a durable and stylish addition to their wind and woodwind collection.