Use® filbert brushes for botanical shapes, details of the human form, and portraiture. Curves, ovals, shaped figure work. This set has a wide variety of sizes in the filbert shape. Great for fine detail, contour and line work. Use on any surface and substrate including canvas, paper, furniture, fresco murals and so much more. Use on any surface and substrate including canvas, paper, furniture, painting panels, walls. Paint Type: Oils, Acrylic, Jar and Heavy Bodied Acrylics, Oils, Gouache, Casein, Varnish. Silver Brush Ltd is owned by a 4th generation art materials family and proud of Silver Brush rich heritage in bringing quality supplies to artists and craftsmen throughout the world. We delight in challenging the status quo and putting Silver Brush experience to work for you because Art is for Everyone!