Firefly 5-Inch Refillable Glass Pillar Candle - Liquid Candles are the Latest Trend in Candle Lighting 5-Inch Hand-Blown Refillable Glass Pillar Candle - Use Alone, in a Hurricane Candle Holder or Lanterns. Its One of Our Top Gifts under $25. All Firefly Pillar Candles use a 3.6mm Wick (included). A Firefly Pillar Candle will a Last Lifetime. It will look Beautiful Forever in the Interior of Your Home. No More Worries About Wax Dripping All Over Your Dining Table. Use as a Centerpiece and Place Berries and Greens Around the Base for a Festive Look and Feel. FUEL NOT INCLUDED. We Suggest Using Firefly Paraffin Lamp Oil or CLEAN Lamp Oil as it is Clean Burning and Unscented. You May Also Want to Use Colored Lamp Oil or Color it Yourself with our 3-Pack of Lamp Oil Dyes Available Separately on Amazon. The Glass Pillar Candle Holds About 15 Ounces of Lamp Oil. We suggest filling it 3/4 full; that would be about 11 ounces. You can Estimate a Burn Rate of About 6 hours per Ounce of Fuel when Using Firefly Paraffin Lamp Oil. Results May Vary.