This item is really good for those of us with fingers that play harp great, but for whom tying string knots is a real challenge. They are reusable and easy to thread. There are 5 holes in each “button” (disk). This will work for smaller gauge strings, but thicker strings like 4th octave pedal will not fit through the holes. (We tested and were able to get up to 5th octave D gut pedal to go through the holes. But it still might be difficult to maneuver these thicker strings.)
You get 12 disks (buttons), a card with instructions and QR code which takes you right to the page you need to see the video.