The Wolfard Oil Lamp Wick Holder is made specifically for the Wolfard Oil Lamp collection. They are made from durable scientific glass and fit in the top of your oil reservoir. 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 Wolfard Oil Lamps. Wolfard Wick sold separately.