Pro Art Triangle 10" With Ink Edge & Finger Lift 30/60 Smoke- Professional grade .08" acrylic triangle with beveled center finger lift and inking edges to prevent smudged lines. Triangle angles include: 30, 60, and 90 degrees. Use for cutting or drawing straight lines. Transparent smoke gray color makes it easy to find. Measures approximately 5.75"x 10"x 11.5".