SKU: AVB02004 | Brand: Vallejo | Product: Vallejo Hobby Brushes: Detail Round Synthetic Brush No. 4 The Vallejo Detail Round Synthetic Brush No. 4 combines synthetic bristles built for durability and sustained functionality. This round brush is offered in sizes no. 10/0 through 4 for broad compatibility with model and miniature projects. The bristles provide strong paint retention with precise, controlled brushwork.