These are simply the pulls or sliders or zipper-uppers.....
A #5 or #6 invisible is the largest invisible zipper made. My pulls will fit on most, if not all, the heavy duty invisible zipper tape. Invisible tape is made differently than just standard coil tape.
Quick tip: if a pull doesn't fit on the end of the coil, turn the coil around & try the other end..... sometimes it works!
Tip #2: Invisible zipper has a little fold in it that folds the coil to the back. So no, you can't use this on STANDARD COIL tape to make it an invisible zipper. Use a reverse pull or head to make a standard coil zipper almost invisible.