The rows of teeth are divided into two sections; one for rough work and the other for fine detailing. No need to waste time switching combs! The wide teeth are rounded, giving the effect of combing with your fingers. The wide teeth are ideal for blending and sectioning, while the fine teeth are perfect for precise work. -The row of teeth is divided into two sections; one for rough work and the other for details. The lightweight comb and ridges on the back provide a firm grip and great comfort during extended use. Y.S. Park uses an extremely durable plastic that will not melt or be damaged by high heat or friction.