These nut drivers are perfect for mounting cable tray.  Driver shaft is hollow so you can tighten the nuts as far up the threaded rod as you want. Through-handle, full-hollow shaft for torquing hex nuts onto threaded rod of any length Color coding...

These nut drivers are perfect for mounting cable tray.  Driver shaft is hollow so you can tighten the nuts as far up the threaded rod as you want. Through-handle, full-hollow shaft for torquing hex nuts onto threaded rod of any length Color coding...