The Winsor & Newton Winton Filbert size 10 brush is made from good quality Chinese hog bristles & are h&-set into seamless corrosion-resistant ferrules. The natural curve of the hog bristle produces a resilient brush which retains its `turned in` shape even after heavy use, allowing the artist more control & accuracy, whether painting with oils, alkyds or acrylics. The Winsor & Newton Winton Filbert size 10 brush is a flat brush with an oval edge, which combines the control of the Short Flat/ Bright with the softer edges of the Round.