Boss Head Clamp Holder-Cast Zinc w/Brass Thumbscrews

This is the part, also known as a right angle clamp, that joins the horizontal apparatus, like a clamp, to a vertical pole, allowing the height to be adjusted by a screw mechanism fastening it to the stand.   Unscrew, move up or down, or screw tight to hold in place.

• Product dimensions: 4.5″ x 1″ x 1″
• Made of cast zinc with brass thumbscrews
• For rods to 19mm in diameter