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Pliers wrench for chrome fittings

Updated: October 2026

You are under a basin with a plated compression nut, and the finish on the tap is the part you cannot repaint. A pliers wrench for chrome fittings is the smooth-jaw tool for that nut, and the wrong tool the moment the chrome is round. Flats stay with the parallel jaws. A bottle trap, a polished tap body, and a plastic bowl with no flats go to a strap. Listings and prices are in the [pliers wrench comparison](/hub/pliers/pliers-wrench). The Products Compared editorial team read the UK sources on 16 October 2026. There was no workshop test. A purchase through a link can earn a commission.

You are under a basin with a plated compression nut, and the finish on the tap is the part you cannot repaint.

Our top picks

WORKPRO WORKPRO 180 mm pliers wrench

Best overall

WORKPRO WORKPRO 180 mm pliers wrench
8.5/10about £16.99
View offer
WORKPRO WORKPRO 250 mm pliers wrench

Alternative

WORKPRO WORKPRO 250 mm pliers wrench
7.5/10about £19.99
View offer
WORKPRO WORKPRO 180 and 250 mm pliers wrench set

Preis-Tipp

WORKPRO WORKPRO 180 and 250 mm pliers wrench set
8.3/10about £29.99
View offer
On this page
  1. 1.Flats, not round chrome
  2. 2.When the strap wrench takes over
  3. 3.Jaw condition matters as much as the brand
  4. 4.What this page will not clear you to do

Flats, not round chrome

A pliers wrench has smooth jaws that stay parallel. Knipex describes the 86 series as able to work directly on chrome, because those faces meet flats the way a spanner does. CIPHE names compression fittings and chrome valves as work for that pattern. BuildWiz puts a 22 mm compression nut at about 32 mm across flats and a 15 mm nut at about 24 mm. The WORKPRO 180 mm claims up to 40 mm. The 100 mm claims 20 mm, and one UK reviewer measured about 19 mm closed, short of a 24 mm flat. The opening to buy is on the pliers wrench buying guide. The faces have to meet. One UK review of the WORKPRO set says the jaws left no marks. Other reviews of that set say the jaws do not line up. A gap at the tip marks the plating. Close the empty jaws in a good light, and wipe grit off the nut. Water-pump teeth will mark a plated nut. The stroke is on how to use a pliers wrench.

When the strap wrench takes over

A strap takes over when there are no flats. BuildWiz is plain about chrome bottle traps, polished tap bodies, and plastic waste bowls: metal jaws bite or slip, and a strap spreads the load. A pliers wrench skates on a round trap, then catches a seam or a logo and leaves a crescent. MyToolshed's Boa Constrictor page states a capacity of 160 mm and sells it for chrome fittings and plastic pipe. That figure is a product claim for the strap, not a test, and 160 mm is the strap's opening, not a nut size. Come back to the pliers wrench for the nut above that trap. If the trap is plastic, a metal jaw can crack it as well as mark it.
WORKPRO WORKPRO 180 mm pliers wrench

Testsieger

WORKPRO WORKPRO 180 mm pliers wrench
8.5/10about £16.99
View offer

Jaw condition matters as much as the brand

Knipex's damage-free wording is a claim about Knipex jaws, including the 86 03 250 data sheet. It does not move onto a WORKPRO or a NUTKIT because the outline looks similar. A proud edge prints into chrome on the first pull. If the edge is sharp, return the tool rather than filing it. Knipex sells jaw covers for sensitive finishes and worn faces, and says the bare tool is for ordinary chrome. Those covers are not in this set, and these listings do not say they fit. A cloth in the jaw slips and rounds the nut. The NUTKIT page claims more than one opening, so do not plan a chrome job around it.

What this page will not clear you to do

It will not clear gas work. A chrome gas valve or an appliance connection in Great Britain is for a Gas Safe registered engineer. If you smell gas, stop. It will not clear live work. None of the pliers wrenches compared here states VDE or IEC 60900. Plastic handles are comfort. ISO 5743:2021 does not treat a plastic coating as insulation. It will not clear a weeping joint you have already nipped, or a concealed fitting that will not move. If the tool was provided for work, PUWER still asks that it be suitable. Change to a strap the moment the part is round.

Common questions

Will a pliers wrench scratch chrome?
It can. Smooth parallel jaws are the least likely metal jaw to mark a plated flat, which is why Knipex describes working directly on chrome. They still scratch if the faces do not meet, if an edge is sharp, or if grit sits on the nut. Close the empty jaw, wipe it, and stop if it rocks on the flats.
Can I use it on a chrome bottle trap?
No. A bottle trap is round. The jaws slip, then catch on a seam or a mould line. BuildWiz sends chrome traps, polished tap bodies, and plastic bowls to a strap wrench. A rubber strap, such as the Boa type sold with a stated 160 mm capacity, matches the round shape.
Do I need soft jaw covers?
Not for ordinary chrome flats, if the bare jaws meet and are clean. Knipex says the bare tool is meant for chrome, and that soft jaws are for sensitive finishes and worn faces. Those covers are a Knipex part. These listings do not say they fit.
What size covers a chrome compression nut?
A 22 mm compression nut is about 32 mm across flats, and a 15 mm nut is about 24 mm, on the BuildWiz figures. The 180 mm WORKPRO claims up to 40 mm. The 100 mm claims 20 mm and is short. One shared WORKPRO review talks about 32 mm fittings rather than 40 mm, so treat the claim as a ceiling.
Can I use it on a gas valve?
No. Gas fittings and appliances in Great Britain are for a Gas Safe registered engineer. A chrome finish does not make the work DIY. Stop if you smell gas. These handles are not stated as insulated, so the same refusal covers live conductors.

Related pages

Pliers wrench or adjustable spanner

Pliers wrench

Best pliers wrench UK: top pick and best-value set

Pliers wrench buying guide: choose the right length

How to use a pliers wrench: button then the stroke

Sources

Knipex product pages, HSE, and ISO, checked on 16 October 2026. Shelf prices and star lines are the amazon.co.uk figures in the display file.

  1. Knipex 86 03 180 pliers wrench (retrieved 16 October 2026)
  2. Knipex 86 03 250 product data sheet (retrieved 16 October 2026)
  3. Knipex pliers wrench family data sheet (retrieved 16 October 2026)
  4. HSE: PUWER overview (retrieved 16 October 2026)
  5. ISO 5743:2021 pliers and nippers (retrieved 16 October 2026)
  6. amazon.co.uk: Knipex 86 05 180 (retrieved 16 October 2026)
  7. Screwfix: Knipex pliers wrench 180 mm (retrieved 16 October 2026)
  8. BuildWiz UK: strap wrench (retrieved 16 October 2026)