The listing, Pawdicure has ended.
This is a filer for dog claws. the opening is on the side and protects the dogs feet from getting nicked by the file. The claw goes into the opening and just the claw, which protects the paw. It works well, I bought 2 one for me and one for a friend, but she already had one, oops. It works on cats too. the hole is big enough for German shepherds and works on Chihuahuas too. I use mine all the time. It makes them less upset because they hate that sudden clip and this file is quiet and not sudden, I end up keeping up with their claws more this way.