When you purchase your Defender (s), just purchase one of these clips for whichever Defender you want it to be placed on. If you order more than one Defender, you have to tell us exactly which Defender (s) you want your clips to be placed on. For example, if you order just a Defender 1 and a clip for it, that is a no-brainer. However, if you order four Defenders and want just two of them to have clips, order two clips, and then tell us which Defenders you want the clips to be placed on, you can email us from the website or directly to firstname.lastname@example.org. Clips are $6.95 each, which includes installation on the Defender of your choice. The clip shown in the video is our previous clip and now we have this insane robust clip that we are installing on the defenders [and all at the same price!]. As you can see it is a very robust clip and the screw can be used to make it a left or right handed defender.