Pinchcock tubing clamps are made of zinc-plated steel wire. Additional Info: Mohr's Pinchcock Tubing Clamps For 16mm Diameter Tubing Package Size(L x W x H): 5.5 X 3 X 0.8 (IN) Categories: Clamps, Mohr's HTS Code: 8205.70.0090 UNSPSC: 4.11224e+007 Country Of Origin: INDIA