Aluminium alloy holds rods up to 12 mm, swivels and locks at any angle.
Zinc Alloy, with nickel plated clamping screws, can accommodate rods up to 12 mm.
Pressure die-cast aluminum alloy. With offset jaws, and nickel-plated clamping screws, to hold rods up to 16 mm. withstands heavy clamping pressure.