M2009BF Features: -Harmonica. -Material: Bamboo comb and brass reed plates. -10 Holes and 20 reeds. -Key of Bb. Holes: -10. Reeds: -Double. Key: -Bb. Generic Dimensions: -Width: 2''. Dimensions: Overall Depth - Front to Back: -2 Inches. Overall Product Weight: -0.5 Pounds.