The beauty of the shaft is particularly noteworthy. It looks as though smoke is trapped within the transparent shaft. The brush is made of sheep's wool, with a bristle length of 2 cm and a diameter of about 0.55 cm. A discount is available when purchased as a set with other brushes. I have several available at the time of listing, so multiple purchases are possible as long as stock remains. I also have other calligraphy supplies for sale, so I would appreciate it if you would follow my account and take a look.