Quoted from Spiderwolf:Are you going to try and incorporate them into a pin? If so, let me know how it goes. For $17 it looks like it would easily be worth a try without breaking the bank if it screws the disk up.
The problem with those is the disc is made if glass so any stray ball hits to them won't be good. The trick to make then work in a game is to encase the disc in something thst can handle the occasional ball hit but still allow you to clearly see the disc.