
WORKPRO W031377AWORKPRO 6in Heavy Duty Diagonal Pliers
50CrV steel with 65 HRC edges, the lightest here.
- Overall length
- 6.6 in
- Cutting edge type
- Induction hardened
- Grip type
- Bi-material
Side cutters, also called diagonal cutters or dikes, snip wire, zip ties and small nails flush against a surface. A good pair cuts cleanly without the edges chipping or dulling, so look for induction-hardened cutting edges, quality steel such as 50CrV or Cr-V, a joint that stays tight, and grips you can hold comfortably for a long electrical job. Longer handles or compound action give more cutting force on thicker wire. We put 8 side cutters on one spec sheet so you can compare them side by side.
Quick answer
Ranked from 8 side cutting pliers that met our standard, compared on cutting edge hardness, max wire capacity, grip type.
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50CrV steel with 65 HRC edges, the lightest here.

CRAFTSMAN drop-forged cutters with induction-hardened edges.

Crescent compound action for 50% more cutting power.
| Spec | ||||||||
|---|---|---|---|---|---|---|---|---|
| Best Scoreout of 100 | 86 | 78 | 76 | 72 | 52 | 45 | 67 | 58 |
| Overall lengthin | 6.6 in | 8.3 in | 8.0 in | 9.3 in | 8.0 in | 11.0 in | 9.5 in | 9.3 in |
| Weightoz | 6.9 oz (best in row) | 7.0 oz | 8.0 oz | 8.8 oz | 9.4 oz | 17.3 oz | 18.4 oz | 16.0 oz |
| Cutting edge type | Induction hardened (best in row) | Induction hardened (best in row) | Induction hardened (best in row) | Induction hardened (best in row) | Hardened (unspecified) | Induction hardened (best in row) | Induction hardened (best in row) | Induction hardened (best in row) |
| Edge hardnessHRC | 65 HRC | — | — | — | 65 HRC | — | — | — |
| Steel material | 50CrV steel | Drop forged steel | Chrome-Vanadium Steel (Cr-V) and Plastic | Drop forged steel | 50CrV steel | 55 high-carbon steel | Drop forged steel | Steel |
| Max copper wire capacityAWG | — | — | 11 AWG | — | — | — | — | — |
| Grip type | Bi-material (best in row) | Bi-material (best in row) | Bi-material (best in row) | Bi-material (best in row) | Bi-material (best in row) | Dipped vinyl | Bi-material (best in row) | Dipped vinyl |
| Insulated handles | — | No | No | No | — | No | No | No |
| Long-reach design | — | — | — | — | — | Yes | — | — |
| Corrosion-resistant finish | Yes | Yes | — | Yes | Yes | — | Yes | — |
| Meets ANSI standard | — | — | — | — | Yes | — | — | — |
| Made in USA | — | — | — | No | — | — | — | Yes (best in row) |
| Warrantyyears | — | — | Lifetime* | — | — | — | Lifetime* | — |
We reviewed 62 side cutting pliers and kept only the 8 that pass every check below. Those are ranked by a Best Score built from spec fit for this job, sales rank.
These reviews are based on each cutter's published specifications and listing information, in the order of our ranking.
WORKPRO W031377A, hard edges in a light 6 in tool
The WORKPRO W031377A leads our ranking. It is a heavy-duty 6 in diagonal plier made from 50CrV steel, heat treated and blackened for hardness, clamping force and durability. WORKPRO lists a core hardness up to 48 HRC and induction-hardened cutting edges up to 65 HRC, which helps the edges resist chipping on steel wire and zip tie heads.
At 6.57 in long and 6.9 oz, it is the shortest and lightest cutter on this page, which makes it easy to work inside electrical boxes, behind dashboards and in other tight places. The bi-material handle gives an anti-slip, comfortable grip.
It ships with a transparent electrophoretic coating to help prevent rust, and WORKPRO suggests wiping it before use and storing it dry. The shorter handles give less leverage on thick cable than the 8 in models. For everyday wire cutting at home and in the car, it is the best choice here.
VerdictThe best side cutter on this page.
CRAFTSMAN CMHT81646 for electrical work
Second in our ranking, the CRAFTSMAN CMHT81646 is an electrical diagonal plier made from drop-forged steel for strength and durability. CRAFTSMAN lists induction-hardened cutting edges that stay sharper longer and a corrosion-resistant finish.
Multi-zone bi-material grips give comfort and control, which helps during long electrical jobs such as wiring outlets or a car stereo. It weighs 7.04 oz, only a little more than the WORKPRO.
Our data notes the handles are not insulated, so never use it on live circuits. CRAFTSMAN is a well-known tool brand with wide availability. For DIYers who want a trusted name for electrical and general cutting, it is a strong pick. Cut with the wire deep in the jaws, close to the pivot, where the cutters have the most force. Avoid cutting hardened steel such as piano wire or screws, which can nick the edges. Wipe the joint with light oil now and then to keep the action smooth, and store the cutters in a dry drawer so the finish stays clean.
VerdictA trusted electrical cutter.
Crescent Pro Series with compound action
The Crescent PS5429C ranks third. Its compound leverage design gives a 50% increase in cutting power, according to Crescent, which makes it the best choice on this page for thicker wire and tougher material.
The edges are induction hardened for a long cutting life, and the body is chrome-vanadium steel with co-molded grips for comfort.
It weighs 8 oz and carries a lifetime warranty. The handles are not insulated. For tradespeople and DIYers who cut heavier wire or nails regularly, its extra cutting power is worth having. Its larger size suits a toolbox or tool belt more than a pocket. Cut close to the pivot for the most force, and keep hardened steel such as music wire away from the edges to avoid chipping them. A drop of oil on the joint now and then keeps the compound action moving freely over years of use. It is a cutter that should last for many years of regular work.
VerdictThe most powerful cutter in our top five.
CRAFTSMAN CMHT81647, a longer diagonal plier
Fourth in our ranking, the CRAFTSMAN CMHT81647 shares the build of the CMHT81646: drop-forged steel, induction-hardened cutting edges that stay sharper longer, and a corrosion-resistant finish.
It is longer and heavier at 8.8 oz, which gives more leverage for thicker wire and cable. Multi-zone bi-material grips keep it comfortable and controlled.
Our data notes the handles are not insulated and that it is not made in the USA. For users who like CRAFTSMAN tools but want more reach and leverage than the smaller model, it is a good option. The extra length suits work on larger wire, fencing ties and cable runs, while the shorter CMHT81646 is better inside boxes and panels. Cut close to the pivot for the most force, avoid hardened steel that can chip the edges, and keep the joint lightly oiled so it opens and closes smoothly. Store the cutters dry when not in use, and wipe off any dust or grease after a job. It is a dependable everyday choice.
VerdictA longer, stronger CRAFTSMAN option.
warmtree 8 in heavy-duty cutters
The warmtree 8 in diagonal cutters complete our top five. They are 50CrV steel, heat treated to 48 HRC core hardness with 65 HRC high-frequency treated cutting edges, matching the edge hardness of the WORKPRO leader.
A precision machined, forged pivot gives smooth operation and transmits cutting force efficiently, and warmtree says the 8 in, or 203 mm, length and leverage design saves 20% of cutting effort. The handles use TPR rubber over fiberglass-reinforced plastic to reduce fatigue.
They are listed as ANSI compliant and have a corrosion-resistant finish. At 9.44 oz they are the heaviest in our top five. For buyers who want hard edges and long handles from a lesser-known brand, they are good value. Wipe off the factory coating before first use, then keep the joint lightly oiled. Cut close to the pivot to make the most of the leverage, and avoid hardened steel and screws that can damage even hard edges. They make a good second pair for heavier work alongside a smaller cutter.
VerdictA solid heavy-duty budget pick.
Best among the reviewed tools
Induction-hardened edges stay sharp longer. Hardness around 65 HRC resists chipping on steel wire.
Short cutters fit tight spaces. Longer handles and compound action cut thicker wire with less effort.
Bi-material grips reduce fatigue during long jobs. Insulated handles are needed for live electrical work.
50CrV, Cr-V and drop-forged steel give strength and durability.
Side cutters cut wire. Wire strippers remove insulation without cutting the wire.
Heavy-duty cutters with hardened edges can cut small nails, but hard steel can chip the edges.
Only with insulated handles rated for electrical work. Turn off power before cutting.
It is a hardness scale. Higher numbers mean harder steel, which holds an edge longer.
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