Enjoy candle fragrance without the flame. Best used with: Tuscany Candle Jar candles up to 3 5/16 in. diameter (see back). Great for: Home; office; dorm; bathroom; kitchen and any flame-free environment. Candle melts from bottom up to release fragrance. An electric alternative to lighting a jar candle. Fits jar candles up to 3-5/16 in. diameter