A simple fastener is a device used to join two objects together. Eyehooks, snaps, latches, SNA's, catches, and Velcro are all examples of simple fasteners. Eyehooks are a type of hook with a loop at one end that can be used to attach an object to another. Snaps are small metal fasteners that are pressed together to secure two objects. Latches are a type of fastener that uses a spring-loaded mechanism to hold two objects together. SNA's are a type of fastener that uses a pin and a hole to secure two objects. Catches are a type of fastener that uses a lever or knob to secure two objects. Finally, Velcro is a type of fastener that uses two strips of fabric with tiny hooks and loops to secure two objects.