1/2" O.D. tubing strut mounted cushion clamp manufactured by Hydra-Zorb. Clamps are made from carbon steel with a tri-valent plating and have a thermoplastic elastomer insert. Designed to work with 1-5/8" wide unistrut. Helps eliminate shock and vibration. Studs are projection welded to clamp. Unistrut is not included and must be purchased separately.