I get them from lurepartsonline. The 7mm jig glass and the jig skirt rattles. Ive even installed them sideways inside the lure to get more rattle, its better but not good enuff. I tried the bullet casing used a 38special thats what fit inside the lure but not the sound Im looking for. I figured the only way to get what I want is to turn the lure then cut it in half long ways make a big chamber big enuff for a 3/8" bearing to bounce around in. And while I have it open run a S/S wire through it. Then glue it back together. But thats too much just for a rattle, Im gonna try something else