These Crown Percussion Authentic Brazilian Agogo bells, deliver a clear High and Low pitch. The large metal bell is 6" long and approximately 2 inches at widest point. The small metal bell is 4 inches long and approximately 1.75 inches at widest point Tap them for alternating pitches, waggle a plectrum between them for a fast alternating sound, or squeezed them together to produce a click sound. Made with a durable finish and folded seam welding. Fun for professionals, students, and people that like great noise.