1. Determining if you are replacing a male or female snap:
A flat snap like below is considered a female snap.
A snap with a raised center, like below, is considered a male snap.
2. Find the snap back like below; it looks like a thumb tack:
3. Insert the snap back from the exterior side into the pre-existing hole where the faulty snap was located:
4. While holding the snap back in the hole, place the male or female snap on top of the point of the snap back:
5. Using the snap tool, place the snap back flat inside the indented black pad:
6. Align male or female top snap with center of white plunger:
7. Squeeze handle tightly:
8. Ensure the point of the snap back has been flattened:
9. Ensure exterior side of snap back is secure:
10. Test Snap: