Glass Wickholders fit into the top of the oil reservoir of your Wolfard Lamp and hold the wick in place. They come in one size and fit all styles and sizes of oil lamps. Wolfard's Cotton Wick has been used in Wolfard lamps for over 30 years. You can purchase wick by the foot or in the wickholder packet. Wickholder Packets include a glass wickholder and two pieces of wick. The wickholder packet comes in four different sizes and the wick is cut specifically to fit the size of your oil lamp reservoir.