***These candles are optimized for Artistic brand candleholders made in 2019 and later. For Artistic candleholders made before 2019 and other brands see SP219519*** Lux Mundi refillable liquid wax candles are quality USA handcrafted nylon candles that ship complete with high-polished brass burners and wicks. All candles are manufactured with a straight base. Candles sold individually (not in pairs). Brass sockets not included. Brass sockets only necessary when mounting candle to a screw-in stand or wanted for cosmetic reasons. Available diameters: 3/4'', 1'', and 1-1/2" Available lengths: 9", 10" 12", 16" Custom modification to accommodate any size socket as well as custom heights and diameters are available upon request. Satin brass, bronze, and nickel burners also available. Please call us at 1-800-237-7511 for assistance.