Platinum tools threaded rod - 1/4-20 male coupler with 3/4inch self drill screw hang ceiling wire & jack chain, threaded rod and eye lag screws.Our hardware is designed for the most efficient, secure and cost effective solution.High quality all steel construction threaded and non-threaded holes to accommodate jack chain, ceiling wire or threaded rod applications vertical overhangs hammer-on threaded rod powder actuated eye lag screws threaded rod pressed beam clamps