This is just too much fun! The simple design has a flexible metal flap secured to a metal handle. On the flap are two metal tongs that end in plastic balls. Shake it by the handle to slap the balls on the flap for a loud bell like ding-ding-ding-ding! Or flick the flap with your thumb for that vibrating sound you get form playing the saw. Then try holding your thumb on the flap and giggling it back and forth for a really cool sound. A must have for any percussionist, for party noise makers, or just folks that love sound. 11.5 x 3 inches.