Scissor Anatomy, Labelled

Every part of a professional shear — what it's called, what it does, and why it matters when you buy.

Hair scissor anatomy An open professional hair scissor with labels pointing to the blade tip, convex edge, ride line, pivot and tension screw, shank, thumb ring, finger ring and finger rest. Blade tip Cutting (convex) edge Ride line Pivot & tension screw Shank Finger ring Finger rest (tang) Thumb ring

What each part does

Blade tip
The first centimetre does the detail work — point cutting, notching, around-the-ear precision. Cobalt-alloy tips chip rather than bend when dropped, which is why drop tests and floor saves matter.
Cutting (convex) edge
The ground face that meets the hair. Japanese-style shears use a convex edge for glide; German-style use a tougher bevelled edge. The grind decides how the shear feels more than any other part.
Ride line
The contact line where the two blades meet as they close. An even ride line is a hallmark of quality manufacturing — you feel it as a smooth, consistent close from pivot to tip.
Pivot & tension screw
The joint the whole tool lives around. The screw or dial sets tension: too loose folds hair, too tight tires your hand and wears the edge. See the tension troubleshooting guide.
Shank
The arm between pivot and ring. Its length and angle set the shear's balance, and bending it is how makers create offset and crane geometries.
Finger & thumb rings
Fit matters more than looks: a ring that's too big makes you grip, which costs control. On an offset handle the thumb ring sits forward for a more relaxed hand; a swivel thumb rotates to spare the wrist.
Finger rest (tang)
The small hook beside the finger ring where the little finger rests. It stabilises the hand for scissor-over-comb and long sessions; some are removable.

For the full vocabulary — steels, edges, techniques — head to the glossary, or see how the parts add up brand by brand in the directory.