0.6 x 0.6 inches (15 x 15 mm); Material: Polyethylene-based aluminum bottle type air freshener. This product is an assortment of core material (fragrance tip). You can refill it with our original SUPERMAXX or any other No. bottle on the market. Since the base core is not fragrant, please infuse your favorite perfume or fragrance by yourself. This product is equivalent to the core material that is standard for Nos bottle fresheners made overseas. Compared to domestic core materials, the highly viscous fragrance may not penetrate easily. We also handle domestic core material with excellent penetration and retention. Please look at it together.