The US Buzz is designed with an over sized aluminum rivet allowing for an extra obnoxious squeaking sound. There are 3 points of contact where sound is emitted. The back rivet, the front part of the blade, a stainless ball, and the blade against the wire. Each doing their part to antagonize a lurking bass into attacking the lure.  Lastly, it features a center keeled flat head enabling faster planing.