The METAL bugle tube
"It took me years to get decent at using a diaphragm/bugle and then this bugle system comes out. Ive never been an over zealous caller and stick to hunting quietly. I can't believe the sound and articulation that is achievable with such a simple design. I tried it for the first time last night and called up one bull in adjacent ranch that I didn't even know was there. I tried again tonight and called that bull and a separate bull so close I got my bow out and set up for a shot. I will try again tomorrow or until the freezer is full. Im really impressed with this product and I suggest this product highly. Its so good I hope that I don't call to another hunter using the same bugle."