Dimension:8 x 2 x 2 inches Ideal for studio or acoustic music Ergonomic Grip Patent Pending Locking Mechanism Latin Percussion’s patent pending Twist Shaker Add-On comes with a twisting lock mechanism on two sides that allows the player to add them to their existing Twist Shaker in different combinations or as part of a set. This Soft (Yellow) model is ideal for use in the studio or acoustic situations.