Escoda Signature Collection Joseph Zbukvic Set 2 contains size 14 & 18 Aquario Mop Brushes. Top Quality Natural Squirrel Hair from Kazan, Russia; Extremely soft with extremely great retention capacity. Ideal for Watercolours and suitable for Gouache, Stiffness: 1 on 6; Perfect for laying in washes on large areas, wetting the paper and absorbing excess liquid. Triple Crimped Ferrule, ensuring that the hairs will remain in place for a lifetime of use. Substantial belly, precise point and amazing spring / snap