Amazon.com: AIT Art Mini Liner Detail Paint Brushes, Size 3/0, Pack of 3, Handmade in USA for Trusted Performance Painting Small Details with Oil, Acrylic, and Watercolors
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Bob Ross : Script Liner Brush : Size 2 - Bob Ross : Brushes - Bob Ross - Brands | Jackson's Art Supplies
How to use a liner brush for fine detail in oils or acrylics Tips & Techniques w/ Lachri - YouTube
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Amazon.com: AIT Art Fine Detail Paint Brush Set - 11 Paint Brushes - Liner, Round, Flat - Handmade in USA for Trusted Performance with Oil, Acrylic, and Watercolor