Brushes made of Kolinsky hair are widely known to be the finest available, offering spectacular artificial nail-fashioning results. A "Kolinsky" is a Siberian member of the weasel family with tail hairs which are perfect for brushes for professional nail-sculpting. Only the finest materials, master crafted by experts A great amount of work goes into the creation of each and every brush Fine brush-making is a true art Acrylic handle, acetone-resistant.