LJ-3084 – Baluster Runner Set. Each item in this set is also available separately. The Baluster Runners™ make installing balusters on open treads and level runs a breeze because they utilize the speed of a drill. Simply insert the special 3/8″ socket driver (included) into one of the Baluster Runners™ and then chuck into any 3/8″ or larger power drill. After running the baluster into the tread or landing using the Baluster Runner™, our handy Baluster Wrench quickly squares the baluster up. We offer a Baluster Runner™ for 1 ¼” balusters and another for 1 ¾” balusters and each can be used on either pin top or square top balusters.