PROFESSIONAL HAIR STYLING ROTATING SWIVEL THUMB SHEARS STEEL: 440C JAPANESE COBALT STEEL SIZE: 6" OVERALL LENGTH 6.5" BLACK TITANIUM COATING HARDNESS: 59-60 ROCKWELL. HAND ADJUSTABLE TENSION SCREW FOR ACCURATE TENSION CONTROL. HANDCRAFTED CONVEX EDGE PRECISION HOLLOW-GROUND FOR LONG-LASTING EDGE IDEAL FOR WET AND DRY HAIRS. SWIVEL THUMB PROVIDES FLEXIBILITY AND INCREASED COMFORT AND CONTROL. ROTATING CRANE HANDLE LETS YOU CUT WITH YOUR ELBOW DOWN IN EVERY CUTTING POSITION, ITS ALSO RELIEVES STRESS ON BOTH SHOULDER AND WRIST