Aluminum Baked Potato Nails Set of 6 - Kitchen Tools & Gadgets These Potato Baking Nails are made of heat conducting aluminum. Bakes potatoes and meat from the inside out. For fluffier, tastier potatoes in less time. When inserted through a potato before baking, the aluminum nail conducts the heat of the oven into the center of the potato, decreasing the baking time required. For oven, stove top, bar-b-que and camping. Not for use in microwave ovens! Nails Measure: 3-1/2" long. Dishwasher safe.