Everbilt 1/4 in. Zinc-Plated Clamp Set (4-Pack) 43094 - The Home Depot
The Plumber's Choice 1-1/4 in. Steel Cable Clamp; Hangs Tubing, Wiring, Ropes, for PEX, Plumbing, Marine, Automobile; Galvanized 114CPSWG - The Home Depot
1/4" Stainless Steel Stamped Double Cable Clamp
LOKMAN 20 Pack 1/4 Inch Stainless Steel Cable Clamp, Rubber Cushioned Insulated Clamp, Metal Clamp, Tube Holder for Tube, Pipe or Wire Cord Installation - Amazon.com