James - all arrows come with inserts (aluminum or carbon). The reason they are not installed is that arrows should be cut to the individual's drawlength. A high speed saw is necessary to cut them (most archery shops have one, or should have one). When cut at an archery shop, they will/can install the inserts for you. If you decide to do it yourself, the inserts for carbon arrows are to be epoxyed in not glued.