The Plumber's Choice 1-1/4 in. Hinged Split Ring Pipe Hanger, Malleable Iron Clamp with 3/8 in. Rod Fitting, for Suspending Tubing (5-Pack) 114HSHB-5 - The Home Depot
Amazon.com: AKIHISA 2 Pcs 4 Inch Heavy Duty Rigid Handleless Flat Pipe Bracket Clamp 304 Stainless Steel Split Ring Hanger ID 101.6mm : Industrial & Scientific
304 Stainless Steel Pipe Clamps 80-600mm Duct Ring Clamp
Amazon.com: WYKA 1-11/32 Inch Split Ring Hanger Pipe Strap,2 Pack Heavy Duty Iron Galvanized Universal Hinge Lantern Hoops Ceiling Mount Pipe Supports Adjustable Bracket Pipe Clamps ID 34mm : Everything Else