The Otto thinning shear pairs a toothed blade with a straight blade for texturizing and blending. The current listing specifies 6-inch length and Japanese 440C steel, but does not publish a tooth count.
Choose by the result you need
Use the thinning shear for blending rather than establishing the main perimeter. Assess the result on a small section before repeating passes. Choose the two-tool set when you also need a straight cutting shear. The guarded razor is a separate technique, not a substitute tooth count.