Mongolian Sable® seamless nickel-plated ferrule and balanced long metallic handle is a renaissance brush without doubt. The hair in this brush is synthetic and multi-toned. This is the closest brush you will find to a natural Mongoose brush. Because the Mongoose is on the endangered species list, we reproduced a synthetic brush that looks and acts like the natural counterpart. The brush has the spring, snap, and soft touch of a sable with the strength and durability of Mongoose. The Mongolian Sable series is truly a workhorse.