The Hi-Glide Rail Joining Plate is used to increase the length of fixed rails or to join together a perimeter track. The Joing Plate cannot be used to lengthen moving rails.
The 3/8" Finger Nuts are used to securely lock the 9.Solutions 3/8" rods to different accessories. The 3/8" Connecting Nut is used to connect multiple 9.Solutions 3/8" rods together, allowing you to make longer rods.
Multiple rods can be used to create larger structures for rigging small cameras, lights, and a variety of other equipment.