The Rocky Mountain Hunting Calls Select A Bull Elk Call contains all the features you have come to expect. The most complete do it all elk calling system ever produced with features designed with the serious elk hunter in mind.FeaturesThe Tone Selector - Simply dial the bull sounds desired; small, medium, or large with true back pressure.Expandable outside tube - Overall length of tube when expanded is 23" and collapses to 17", allows for better compaction and ease when carrying.The Tube Tamer produces better sound quality, and coupled with the "Conqueror" external mouthpiece even novice callers can use this tube. Remove the "Conqueror" mouthpiece for diaphragm use.Also Includes an extra "Palate Plate" replacement reed, non-slip camo cover, protective cap for mouthpiece and lanyard.