Product review (4 stars): Double-Check your appliance retailer before purchasing this product!
Poly tubing and brass connectors seem to be high-quality and durable. However, product seems over-priced when copper tubing kits can be had for about $10 more.

One important note: Double-check with your appliance installer before purchasing. I was informed by the Lowe's installer that they are unable to install Polyethylene tubing due to a propensity of polyethylene to rupture/tear vs. copper. But installation was easy and straightforward otherwise - just be sure not to slide your fridge over the tube!!