What you receive: 6 catalytic wick replacements in 2 colors (silver and gold), 3 pieces per color. Harmless and strong: Made from a clay-based ceramic material with a metal outer ring for structural support and shape retention. Good oil absorption: Tight weaving enables efficient absorption and diffusion of essential oils when used with compatible catalytic aroma lamps. Aromatherapy bottles and essential oils are not included. Size information: Ceramic diameter is 0.71 inches (18 mm), suitable for most catalytic aroma lamps. Please verify compatibility with your lamp’s burner opening before purchase. Practical usage: After absorbing essential oil, the wick facilitates catalytic diffusion to disperse fragrance and help purify air. Color: Gold, Silver, Creamy White Material: Cotton thread, metal, clay Package contents: 6 x Replacement Fragrance Oil Lamp Wicks Note: Colors may vary slightly due to screen settings. Measurement tolerance: ±1–3 mm.