16Pcs 1-3/8 Inch Stainless Steel Conduit Clamps, Two Hole Strap U Bracket Rigid Pipe Strap Metal U Clamp Conduit Strap Tension Clips U-tube Clamp Heavy Duty - Walmart.com
Tilmor - 2" Square Tube Cross Clamp
Oatey 2 in. Steel Riser Pipe Clamp 33579 - The Home Depot