What you can receive: The sufficient quantity provides a wide choice to meet your burner wick replacement needs. The diameter is about 18mm, which is the regular size suitable for most catalytic aromatherapy lamps; please check the size before purchase. Reliable and long-lasting: The catalytic core is made of a mixture of clay and fabric thread, manufactured through a quality process to form a porous core, providing reliable and safe performance for extended use. Air control catalytic function: The oil lamp wick can be lit with fire, or simply placed in oil bottles, offering good absorption. It can be used with aromatherapy bottles and essential oils to release fragrance into your room. Wide range of applications: These air control catalytic burner lamp wick replacements are compatible with most standard catalytic fragrance lamps. They can be placed on tables, desks, in living rooms, bedrooms, kitchens, bathrooms, offices, or other spaces to help purify the air and create a pleasant atmosphere. Color: Beige + gold Material: Cotton thread, metal, clay Package Contents: 2 x Catalytic wick replacements Only the above package content is included; other products are not included. Note: Lighting and different displays may cause slight color variations between the item in the picture and the actual product. Measurement allows an error of +/- 1-3 cm.