For rods upto 19mm in diameter

Cast Iron, Brass Thumb Screws
Brass Body, Brass Thumb Screws
Cast Zinc, Brass Thumb Screws

Top-3 pronged clamp, 10" long, prongs covered with rubber tubing bottom-extension clamp with cork covered jaws, 8" total length

3 Prong Clamp, Steel
Extension Clamp, Steel
3 Prong Clamp, Aluminum

Cast Iron ring with black enamel finish. Detachable zinc plated legs