These pads are sold individually. They are made of PVC and measure 5.5x5.8cm. The hole is approximately 4.5mm and has a metal ring.
These pads are perfect if you want to make your own phone cords. These clear pads go into your phone case, and the hole with the ring goes through the hole in your case where your phone cord goes. Once you put your phone back in the case, you can attach a phone cord to the ring! This is easiest with a large lobster clasp, like these keychains !
