Blowing horn / winding horn made of polished cattle horn. Size about 50 cm long. Made in Germany. The horns vary in shape, diameter and color as horn is a natural product. The horns have a hole that serves as a "mouthpiece". Sounds are produced like on a trumpet. The air causes the lips to vibrate and the horn then merely amplifies the resulting sound. Instructions can be found online if needed. Price per piece.