National Hardware 1/4 in. Wire Cable Clamp, Stainless Steel at Tractor Supply Co.
Do it 1/4 In. Plastic -60 to 340 Deg F Cable Clamp (18-Pack) - Do it Best
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
Lowbrow Customs Clutch / Brake Cable Clamp - Aluminum - for 1-1/4 inch Frame Tubing
Cable Clamp 1/4" 1-hole Steel – Fosco Connect
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