The Plumber's Choice 1 in. Hinged Split Ring Pipe Hanger, Copper Epoxy Coated Clamp with 3/8 in. Rod Fitting, for Hanging Tubing (10-Pack) 01HSHCP-10 - The Home Depot
Sumner UC2-6 Ultra Clamp Pipe Fit-Up Clamp for 2 - 6in. Pipe - Jim & Slims Tool Supply