Stealthdrums Internal Side Mount Trigger System for toms. Comes with dual trigger piezos, mounting hardware, rubber rim trim, and an input jack. This is installed inside of a drum so tools and some handiness is required. We install these all the time so if you don't want to do it yourself you can either send us the drum and pay us to do it for you. Or you can get a Hawk series drum or kit where its already installed and ready to go.