description of products: Love music boxes, but can't seem to find the music you really want??Look no further, with this mechanical music box set, you can create the music box you've always wanted.?The music box is operated by turning the handle as the music track is fed through the movement of the music box.?Threea blank music track is included and a hole punch to write your own music in minutes. Features: The movement of the music box attached to a punch of metal and 3 tapes for practice and imitation use.? Create your own musical melody by making holes in the supplied paper strips and play the music you want. Blank tapes are used to compose music, and you can also make new tapes out of thick paper.? Write your musical note on the strip of paper and use the perforator to drill the holes. Place the perforated strip of paper inside the movement of the music box and shake the spindle, then you can make a sound.? Spec: Note: 30 Material: zinc alloy, mental, paper Size musical movement: 10.7 x 6.9 cm / 4.21 x 2.71 Size of the tapes: 66 x 7 cm / 26 x 2.75 Total weight: 406g ( approx.) Instruction: 1.?Fixed with 2 or 3 screws that are commonly used for toys or gifts with 2 screw holes.?Use a suitable glue to fix it. 3.?The volume is small, it needs to be fixed in an appropriate box or box to increase the volume. The package includes: 1 x movement of crank music with 1 x hole punch and 3 x blank tapes Note: 1.?Please allow 1-3cm error due to manual measurement.?Thank you for your understanding.? 2.?Monitors are not calibrated