Knipex 86 04 100 BK XS Pliers Wrench (100 mm) – pliers and integrated wrench in one tool

The essentials first

If you carry tools every day, there’s a certain kind of annoyance: you’re tightening something, then you realise you also need a proper grip tool… and you have to reach for a second item. The Knipex 86 04 100 BK is designed to reduce that faff. It combines pliers and a wrench into one compact unit, with a stated tool length of 100 mm and a parallel jaw opening that grips across flats up to 21 mm.

That “one tool, two jobs” approach is the main reason people buy this sort of item. It’s not trying to replace a full workshop kit, it’s built for smaller tool rolls, bike/motorcycle pockets, and those precision jobs where you still want real holding power.

What it’s good at in real use

On paper, the headline is the grip capability: the tool is described as having a large gripping capacity despite its short length (100 mm). The parallel jaws and the ability to grip continuously up to 21 mm across flats is aimed at fast, confident clamping without constantly re-positioning.

There’s also a practical detail worth calling out. The description mentions a robust sliding joint for “high stability and resilience”. In plain terms, it’s meant to stay dependable under use, not feel wobbly as you adjust and apply pressure.

Then there’s the surface-friendliness angle. The jaws are described as smooth for gentler assembly of sensitive fittings and parts, and the manufacturer notes it can be used directly on chrome due to smooth full-surface contact. That matters if you’ve worked with shiny or delicate finishes and you don’t want the tool to become the problem.

Key features that actually affect buying decisions

This model sits in that “compact but serious” category. Its intended use areas include precision engineering, plumbing work, and being an essential part of a bicycle or motorcycle toolkit, plus general EDC and model making.

A few buy-relevant points from the description: - Compact size (100 mm) makes it easier to carry, stash in a toolbox drawer, or take on-site. - Parallel jaw opening grips up to 21 mm across flats, which covers a meaningful range for many common fasteners. - Smooth jaws are geared towards delicate surface finishes, including direct use on chrome. - Robust sliding joint is positioned as the stability mechanism, so you’re not relying purely on grip force.

Where it shines, and where it can fall short

It’s a strong choice if your priority is having one compact tool that can both grip and act like a wrench, especially when you want to avoid scratching or marring finishes.

That said, it may not be the best fit if your work regularly demands a full-size range of wrench sizes, heavy-duty leverage, or specialised access in very tight spaces. Because it’s explicitly a small-format tool, it can feel limiting compared with larger, more comprehensive tool sets if you’re the sort of buyer who expects everything from one item.

Also, if you routinely work with sizes beyond the stated 21 mm across flats range, you’d want to check whether this width coverage is enough for your typical jobs.

Who it’s for (and who should skip it)

It makes sense if you: - want a bicycle or motorcycle toolkit item that saves space and reduces the number of tools you carry - do plumbing or small assembly tasks where you value smooth contact on finished surfaces - prefer EDC-style capability for model making or precision engineering work

You may want to skip it if: - you need broader wrench coverage than the up to 21 mm across flats capability described - you’re building a general-purpose workshop set and don’t need the “one tool” concept - you mainly do jobs that call for larger, higher-leverage tools rather than compact grip-and-wrench control

At a glance: what to check before buying

Before you commit, it’s worth sanity-checking two things based on the information provided: 1) Your usual fastener sizes: does your work fall within the gripping range up to 21 mm across flats? 2) The finish you care about: if you regularly handle chrome or delicate surfaces, the smooth full-surface contact claim is exactly the sort of feature that can justify choosing this over rougher-grip alternatives.

A quick micro-example: imagine you’re servicing a bike and you find a small fitting with a shiny chrome finish that needs careful handling. Reaching for a rough-jaw tool can leave marks. With smooth jaws intended for gentle assembly and chrome contact, you’re set up to grip and turn without making the finish look worse.

Final verdict

Is it worth it?

If you want a compact, carry-friendly tool that can grip and wrench in one go, the Knipex 86 04 100 BK makes a lot of sense for the kind of work the description calls out: precision engineering, plumbing touch-ups, and bicycle or motorcycle jobs, plus EDC/model making.

It’s not the sort of tool you’d pick as your only option in a fully stocked workshop, but it does look purpose-built for buyers who value stability from the sliding joint, smooth jaw contact on sensitive finishes (including chrome), and a practical gripping range up to 21 mm across flats.

So, buy it if your day-to-day tasks match that footprint and range. Skip it if you routinely need larger wrench coverage or if you’re after a bigger tool-first solution rather than a compact one-tool approach.

FAQ

Can it be used on chrome finishes?

The description states it can be used directly on chrome thanks to smooth full-surface contact.

How much can it grip across flats?

It’s described as gripping continuously up to 21 mm width across flats.

What’s the point of the sliding joint?

It’s described as robust, offering high stability and resilience, which is meant to improve control as you adjust and apply force.

Is it suitable for everyday carry?

The listing mentions EDC (Every Day Carry) as one of its application areas, alongside bicycle and motorcycle toolkit use.

What kind of tasks is it aimed at?

The stated areas include precision engineering, plumbing, bicycle/motorcycle toolkit work, EDC, and model making.