These precision diameter adapters are available to adapt larger candles to fit smaller candlestick sockets or smaller candles to fit your larger sockets. They simply screw into the pre-drilled and tapped hole in the bottom of every Lux Mundi brand oil candle and allow it to fit your present candlestick socket. Can be used in all refillable and oil container candles. hand crafted from solid nylon stock. Sizes range from 7/8″ to 2-5/8″ diameter.