The Black Satin swivel 30-tooth thinning shear will remove weight also blend and remove lines on any type of hair. Made with Japanese 440C Steel for long lasting performance.  Smooth as Butter! The Black Satin swivel 30-tooth thinning shear has a rotating thumb. Therefore this creates a horizontal cutting action which relieves wrist fatigue. Great for carpal tunnel problems, also lowers the elbow and shoulder position which allows for a flat wrist position while cutting.