3 curve small teeth above each curve tooth 30 big teeth ,90 little teeth, catch thick hair smooth and easy.Since each tooth is curved and has 3 small teeth on it, the feel of the hand is wonderful.Curved teeth technology is the best choice to avoid hair got caught in blades, while only high-quality steel like Japanese 440C stainless steel can reach the goal, as it's so strict on steel quality. Fine Adjustment Tension Screw Spring leaf tension adjustment system with knurled knob, can be loosed or tightened without screw key tool.Simply turn the knob clockwise to tighten and counter-clockwise to loosen. SWAROVSKI gemstone+Accurate Balance Design SWAROVSKI gemstone in the two-leaf intersection and mirror polish finish.