Halex 1 in. Rigid 1-Hole Conduit Strap 96113 - The Home Depot
Halex 2 in. Standard Fitting Rigid 2-Hole Conduit Straps (2-Pack) 26126 - The Home Depot
Source China factory electrical series pipe fittings pvc "U" Conduit Clip pvc clamp on m.alibaba.com
Jersvimc 30Pcs 1/2 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 - Amazon.com