This set contains five Polar synthetic brushes in the following sizes : No.8 Round, No.6 Round, No.4 Round, No.2 Round and 3/8" Flat One Stroke. They are made from a good quality synthetic hair which has good colour holding and pointing qualities. They are very durable and although best suited for use with Acrylic or Watercolour they may also be used with Oil painst. The set is packaged in a clear fronted display wallet. Great value.