This is one of the best external calls ever made, it has a thin replaceable reed that snaps into place in seconds. What makes this call so good is how easy it is to use and the great sound that comes out of it. A original design by Glen Berry. Works with your top lip or bottom lip you can even place our tongue against the RT reed and gently blow through the call and get good sound. Tube 1.5 x 28 long. Camo cover pattern varys.