The B9023-1 alcohol burner has 135 mL capacity. Conical, low profile design is more stable and much safer than glass alcohol lamps. Supplied with snuffer cap and one extra wick. 3½"H x 4" Dia. B9023-2 alcohol burner has 170 mL capacity. Wick height adjusted with thumb wheel. Made of nickel-plated brass. 3½"H x 2¾" Dia.