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5-3/8 inches overall, 5 inches of teeth.
Teeth have rounded tips that won't scratch and scrape on your skin. Nylon material flexes as you would expect. Practical Aesthetics logo on handle. A test print (illustrated) looks and feels quite satisfactory.
A little pricey as pocket combs go, but how many can brag they are 3D printed?
For a coarse/fine version, see http://www.shapeways.com/model/259456/.