Twin mounting kit for FB3125 Eaton / Cutler Hammer circuit breakers and panelboards. Every company has a nick name for these kits. Strap kits, connector kits, bus kits, mounting hardware kits, breaker connector kits. Most people need help, so please call for assistance. We can avoid returns and you don't want to get the wrong item or the job stops. We can really help. Please take a good phone/camera picture and email us at firstname.lastname@example.org, then call 800-321-8998, you'll be happier.