JMF Seamless Copper Tube is preferred by plumbing, HVAC and refrigeration professionals who demand the highest quality, appearance, fill rates and largest selection. For safety and reliability, pure copper tubing remains the #1 choice of professional plumbers installing potable water systems.; ; Brand Name: Cerro Flow Diameter: 1/4 in. Length: 50 ft. Material: Copper Tubing Type: Type Refer Product Type: Refrigeration Tubing Wall Thickness: 0.03 in. Coiled: Yes Outer Diameter: 1/4 in.