An Adjustable Hole Cover. One size of hole cover will accommodate a wide variety of hole diameters, and fit snugly. The device is made from a lightweight, yet durable material. A version having a cap with an internal metal core is also available. The cover costs less than prior plugs by incorporating a durable cap element to which a low-cost stem is attached. The stem is selected from a group of different-sized stems made from a low-cost material, such as wood.