Made of natural black pork hair. The handle is made of natural wood material. We use a bonding method instead of traditional implantation methods in the hair planting method, which provides a high density and reliable polishing experience. Eco-friendly material that is environmentally friendly. Planting part size: Length approx. 2.6 inches (65 mm), Width 0.6 inches (15 mm), Hair length approx. 0.8 inches (20 mm), Color variation available.