What Are Combination Pliers Used For? | Jobs & Techniques

Whether you’re running new wiring in a wall or tightening a loose hose clamp, combination pliers—sometimes called lineman’s pliers—usually reach for first. Unlike a set of slip-joint pliers or a dedicated wire cutter, this tool merges a flat serrated gripping jaw, a rounded section for round stock, and cutting edges near the pivot. You can grab a wire, twist it, snip it, and move to the next task without switching tools. Below is how to put them to work on real jobs and which features to watch for.

What Combination Pliers Are Designed To Do

The tool’s strength is its multifunction jaw. The flat, serrated forward section grips flat materials like sheet metal or electrical boxes. The rounded cutout behind it holds round objects—pipe, rod, or thick cable—without slipping. Cutting edges sit close to the pivot point, where leverage is highest, so you can cut soft wire and cable with one hand.

This design evolved specifically for electrical work. Electricians need to grip conductors, twist wire ends together, and cut the excess without reaching for three separate tools. The same principle applies in metalwork, plumbing, and general repair: one tool does the job of several, and the time saved is real.

Primary Uses: Electrical Work and Wiring

Combination pliers are the main hand tool for most electrical tasks. The serrated jaws hold wires securely during stripping or connector crimping. The cutting edge snips copper or aluminum wire cleanly up to the gauge the manufacturer specifies. After you twist stranded conductors together—a common step in making a wire nut connection—the flat jaw surfaces do the final tightening twist without damaging the insulation.

On covered electrical jobs, use insulated combination pliers rated for the voltage you’re working with. Standard models do not protect against live circuits, and assuming they do is a common mistake.

Beyond Electrical: Metalwork, Plumbing, and Household Repair

The same traits that make these pliers useful on wiring apply to other materials. The flat jaws grip light-gauge sheet metal during bending, hold a stubborn nail or staple head while you pull, or clamp a small ferrule onto a copper tube during plumbing repairs. The cutter can handle soft copper wire, thin picture-hanging wire, and zip ties. Some models include a small screw-cutting notch for rethreading damaged bolts, though that feature varies by brand.

Because the serrated jaw leaves marks on soft surfaces, use the rounded grip section when holding finished pipe or soft metal that needs to stay clean. For jobs that need a protective surface, wrap the jaw teeth with electrical tape or use smooth-jaw pliers instead.

How To Use Combination Pliers Properly

Get the most out of the tool by matching the jaw area to the material:

• Flat or thin material: Use the forward flat serrated section. This works for sheet metal, nail heads, connector bodies, and flat wire ends.
• Round material: Use the curved grip notch behind the flat jaw. This section was designed for pipe, rod, and cable where flat jaws would let the work roll.
• Cutting: Place the wire as deep into the cutter as possible, near the pivot. That position multiplies your hand force, so you cut with less effort. Cut near the tip of the cutter only for small, soft wire.
• Bending and twisting: Grip at the end you want to hold steady, then apply force to the free end. For wire-twisting joints, grip both wire ends in the flat jaw and rotate the tool.

The Maun Industries knowledge base on combination pliers confirms that the cutter position near the hinge is what gives these pliers their cutting power. For a side-by-side look at models built for different budgets and tasks, check our tested roundup of the best combination pliers for home and pro use.

Limitations and Safety Notes

These pliers are general-purpose, not specialist tools. Their cutters are designed for soft wire and cable—steel wire, nails, or bolts will dull or chip the edge unless the manufacturer explicitly says otherwise. The serrated grip can mar plastic piping, soft brass, or painted surfaces. For live electrical work, only use insulated models rated for the voltage present, and check that the handle insulation is intact before every use.

Combination pliers also cannot replace a dedicated tool for repetitive tasks. If you are crimping dozens of connectors every day, a crimping tool gives better, more consistent results. For everyday repair and maintenance, though, these pliers handle 90% of what comes up.