Hand-blown glass creates soft, subtle black on white patterns throughout. Clear glass dish is removable for ease of use. Pluggable Fragrance Warmers by Candle Warmers Etc. are decorative and versatile. They can be used with any outlet, both vertically and horizontally, by twisting the plug base. Ideal for above counter outlets in small room spaces. | Candle Warmers Obsidian 2 Piece Pluggable Fragrance Warmer