Features: 1. Available on both sides: According to the degree of knotting, choose different combing sides to easily open knotted hair. 2. Three styles are available: Walnut series: double-sided open-knot comb, large-sized open-knot comb, small open-knot comb, three styles are available. 3. Fall resistance: wooden products are not easy to break 4. Fine workmanship: durable and long life