Features:Ten pieces in one set, 2.5 in strength.Made of high quality bamboo.Come out with a pretty good sound.Suit for Alto bE Saxophone..Material: BambooQuantity: 10 piecesPackage Weight : 40 G / 1.41 OuncesPackage Dimensions (L*W*H) : 97*78*11 MM / 3.82*3.07*0.43 Inche