This is one of our best sellers the 450. The main reed of .004 with a half stack of .003. Experienced users reed and durable. Big bull bugles and can handle lots of pressure for the callers that are heavy-handed. Excels in lower tonal bugles but still has a good range of pitches. It does have a little break-in time, run 20 bugles on it then set it aside and let it dry and your good to go.