New sizes were just added to the line of PT Model Carbon Fiber Indoor Propellers. While very light, they are super strong. The finish is a beautiful high gloss, clear epoxy gel-coat over black woven carbon fiber. All are factory balanced. These beautiful propellers are designed exclusively for indoor flying. Now available in sizes 11×3.8, 12×3.8, and 13×3.8 (Pusher and Tractor configurations).