The lower limb adapter attaches to your Gen 7*/7x arrow rest so you can tie your activation cord to the lower limb of your bow. All mounting hardware, including screws, is included with the adapter. *Compatible with post-second-generation Gen 7 arrow rests. To tell if your Gen 7 is compatible, there is a pocket behind the launcher arm with two screw holes where the lower limb adapter attaches. Please contact us if you have questions regarding your rest's compatibility.