This Watts stainless steel braided supply line starts with an extruded core of PVC tubing. The core is then over-braided with polyester yarn and another layer of PVC material. The final layer consists of stainless steel braid to form a strong, yet flexible supply line.Ice maker connector 10-Feet stainless steel 1/4-Inch compressionStainless steel braiding over braided PVC for strengthDurableStainless steel crimp sleevesPoly bagged