10 Shear Spec-Sheet Lines and What Each One Tells You

A spec sheet is a list of claims, and each line answers one narrow question. Read ten of them in order and you can describe a shear precisely enough to compare it with another; read none and you are comparing photographs.

Short answer. Nominal size, blade length, hand, handle layout, edge, blade profile, steel, hardness, tooth count and pivot are the ten lines worth reading. Treat each as a separate fact, and ask what it leaves out before you let it decide a purchase.

How this list was chosen

We picked the ten fields a stylist most often meets on a shear listing and most often misreads, based on how listings are written in general and on this store’s own product pages. It is an explanatory list, not a ranking, and no product was tested. Reviewed 4 November 2026. The full A to Z of terms is in the 20-term glossary.

1. Nominal size: the label, not the blade

Nominal size is the marketed length of the whole tool, usually in inches. It helps you browse and match a familiar tool. It does not say how much blade you have. Treat it as a filing label, and see the definition of nominal length.

2. Blade length: the figure that is often missing

Where a maker publishes a cutting-blade measurement, it tells you more about reach than the inch label. Many listings omit it. If reach matters to your work, ask for it or look on the maker’s model page, and note which endpoints the maker measures between.

Two lengths, two different measurements

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1. 1
   Overall tool lengthCompare the maker’s stated whole-tool size. Finger-rest treatment can vary.
2. 2
   Blade lengthA separate blade measurement. Check the model specification rather than converting its nominal inch label.

3. Cutting hand: construction, not grip

“Left” and “Right” describe the blade and handle build. A listing that offers both in a selector is selling two options of one model, and the selected SKU decides which you receive. Read it twice, once before adding to cart and once in the cart.

4. Handle layout: where the thumb sits

Opposing, offset and crane layouts, and fixed or swivel thumbs, are descriptions of geometry. They say nothing certain about comfort in your hand. Compare against the handle you already use; the handle comparison guide lists what each term means.

5. Edge: convex, bevelled or micro-serrated

The edge line describes the surface that does the cutting. A convex edge has a curved profile approaching the cutting edge, a bevelled edge is formed with a flat bevel surface and a micro-serrated edge carries fine serrations. It is different from the blade outline, and a technician needs to know it before sharpening. The convex edge guide shows the profiles.

Curved profile or defined bevel?

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1. 1
   Convex profileA curved outside approaches the cutting edge.
2. 2
   Defined bevelA flat bevel approaches the cutting edge. Read the exact maker term.

6. Blade profile: sword, bamboo-leaf, straight

Profile describes the outline: a reinforced sword shape, a broad bamboo-leaf curve or a plain straight blade. It is not an edge grade and not a steel. Keep it in its own row of your comparison so that “convex” and “sword” are not treated as rivals.

7. Steel designation: a name, with limits

A named steel such as VG-10 or 440C tells you what the maker lists. It does not tell you the heat treatment, the finishing or how a model behaves in use. Read the steel library for what each grade is, and treat the name as one input to the choice, not the verdict.

8. Hardness: one property among several

Hardness is often quoted as a Rockwell C figure. It is a measured property with a stated context; it is not a score for cutting quality, comfort or value. A figure that does not change your decision can stay a footnote rather than a reason to buy.

9. Tooth count: not a removal rate

On a thinning or texturising shear, tooth count is the number of teeth. It does not tell you how much hair a closure removes: tooth width, spacing and the opposing blade matter too. Where a maker states a cut ratio, it belongs to that exact model. The cut-ratio guide explains how to read one, and same count, different thinners shows why.

10. Pivot and tension: how the blades are joined

The pivot is the joint; tension is the designed resistance of the closing blades. Screws, bearings and click-lock systems differ by model, and each has its own adjustment instructions. A listing that names the system is telling you what to look for in the care notes, not promising how smoothly it will move next year.

Know the parts you are comparing

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1. 1
   Finger restAlso called the tang; the small extension beside the finger ring.
2. 2
   Finger ringThe bow on the handle opposite the thumb ring.
3. 3
   Thumb ringConnected to the blade moved by your thumb.
4. 4
   PivotThe joint where the two halves turn; tension hardware varies.
5. 5
   Cutting edgeThe sharpened inner border where the blades meet.
6. 6
   TipsThe ends of the blades. Compare their shape on the actual model.
7. 7
   BumperA small stop between the handles, sometimes called a silencer.

What a spec sheet cannot tell you

It cannot tell you how a shear feels in your hand, how it cuts the hair you work with or whether the exact unit that arrives is sound. For the last, follow the arrival checklist. For the rest, compare against your current tool on one job, and use the listing reading guide to check every selected option.

Next steps

Choose two models that name every one of the ten lines, and compare them line by line. If a field is missing, say so in your notes rather than assuming it. The Japanese shear buyer’s guide and the knowledge base carry the wider context.

Questions people ask

Which spec line matters most? It depends on the job. For reach it is the blade length, for fit the handle layout and for a toothed tool the maker’s cut ratio for that exact model.

What if the listing leaves a field out? Record it as unknown, compare the lines you do have and ask the seller or check the maker’s model page rather than assuming.

Further reading

• Scissorpedia, a reference website on scissors.
• Scissors on Wikipedia, for general background.

Scissorpedia is a fellow member of the ShearAlliance; see ShearAlliance.