Herbal (mint) incense by Mandala Arts and Incense is a typical Tibetan incense. The sticks are about 5.5 inches long. They burn for approximately 45 minutes. There is no wooden core and the incense comes with it's own burner. This incense is prepared according to ancient Tibetan recipes. Good for meditation or filling your space with good smells. You can break off parts of one stick to burn less than one whole stick at a time.