What can you receive: The sufficient quantity provides you a wide choice to meet your burner wick replacement needs in . The diameter is about 18mm, which is the regular size suitable for most catalytic aromatherapy lamps, and please check the size before purchase Reliable and long-lasting: the catalytic core is made of mixing materials of clay and fabric thread, manufactured by a good process to become a porous core, reliable and safe to apply, can service you for a long time Air control catalytic: the oil lamp wick can be lit with fire, or you can just put in oil bottles, and it has a good absorption effect, that can be applied with aromatherapy bottles and essential oils, bring fresh fragrance to your room Wide range of applications: these air control catalytic burner lamp wick replacements can be combined with any ordinary catalytic fragrance lamps, and you can put on the table, desk, living room, bedroom, kitchen, bathroom, office, or other places, to purify air and give you a good mood color:Beige + gold Material:cotton thread, metal, clay Package Contents: 4 x catalytic wick replacements Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.