Our premium 3-prong extension clamps are crafted from pressure die-cast zinc alloy with a chrome-plated finish. The prongs open up to approximately 3" and securely grip items up to 2.25" in diameter, utilizing dual keyed spring-type adjustment screws for added stability. The boss head clamp offers a full 360° rotation and locks at any angle, accommodating support rods up to 19mm in diameter.
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