The Kupo 18" Baby stand extension adds that little bit Extra height to your light stands, baby plates or any other baby pin that needs extending. These super handy Chrome plated steel extensions will support anything you throw at them. These extensions also feature a base with a junior, or 1/8" Diameter. Just remove the locking knob and drop it in a junior socket. The top of the baby pin also features a 1/4"-20 female thread for additional mounting options. The baby stud has a knurled neck so the set-screw bites down nice and tight. They come in 6", 12", 18" And 24" Lengths.