KNIPEX Cobra 87 01 180 Water Pump Pliers: Compact 7-1/4-Inch Grip

A compact pair of water-pump pliers earns its place when a full-size tool has the grip you need but not the access. The KNIPEX Cobra 87 01 180 is the 7-1/4-inch version of the brand’s push-button Cobra design, built to get into tighter plumbing, automotive, maintenance, and repair spaces while still opening to 1-1/2 inches for pipe.

This article covers the exact KNIPEX 87 01 180 sold as Amazon US child ASIN B000X4PU26. On September 27, 2026, Amazon showed a $36.25 price, a 4.9-star rating from 8,004 reviews, and 1K+ purchases in the past month. KNIPEX lists the tool at 180 mm long and 170 g, with 18 adjustment positions, up to 42 mm pipe capacity, and up to 36 mm wrench size for nuts.

The 7-1/4-inch body is about access, not maximum leverage

At 180 mm long, the 87 01 180 is meaningfully smaller than the common 10-inch Cobra. That shorter body is useful under sinks, around engines, inside cabinets, and anywhere a longer handle becomes the thing blocking your hand. The 170 g weight also makes it an easy addition to a compact service pouch.

The tradeoff is basic mechanics: a shorter handle gives you less leverage than a longer Cobra. This model makes the most sense when access and portability matter more than maximum turning force. Its 42 mm pipe capacity is generous for the tool’s length, but larger fittings or stubborn work may still justify a 250 mm or 300 mm version.

Eighteen push-button positions make sizing quick and repeatable

Instead of sliding a tongue through open grooves, the Cobra uses a push button to change jaw position directly on the workpiece. KNIPEX gives this 180 mm model 18 adjustment positions, so you can set the handle spacing closer to the size you are actually gripping.

The company also uses a box-joint design with a double guide and a hinge bolt that locks into the selected position. In practice, that layout is aimed at keeping the jaws aligned while letting you resize the opening with one hand. It is especially useful when you are moving between different nuts, fittings, and pipe diameters during one repair rather than staying on a single size.

Hardened teeth favor secure bite over finish protection

KNIPEX hardens the gripping teeth to about 61 HRC and describes the jaw geometry as self-clamping on pipes and nuts. The goal is to keep the tool from slipping while reducing how hard you need to squeeze the handles just to maintain contact.

That aggressive bite is a strength on rough metal pipe and ordinary repair hardware, but it is also a reason to choose carefully. Serrated hardened jaws can mark softer, plated, painted, or decorative surfaces. If protecting a visible finish is the priority, smooth-jaw pliers or protective jaw covers are a better fit.

The tool’s handles have a non-slip plastic coating and KNIPEX includes a pinch guard, but those grips should not be treated as electrical insulation. This is a gripping tool for mechanical work, not an insulated live-work tool.

Buy the 180 mm Cobra for tight repair work, not every large job

The 87 01 180 is a strong fit for plumbers, maintenance technicians, mechanics, homeowners, and DIYers who want a compact adjustable plier with more capacity than its size suggests. The push-button adjustment, 18 positions, slim head, and self-clamping jaw design all support quick work in confined spaces.

It is less compelling if most of your jobs involve large pipe, high leverage, or surfaces that cannot tolerate tooth marks. In those cases, a longer Cobra or a different jaw style is the better tool.

Choose this 7-1/4-inch Cobra when your priority is getting a secure adjustable grip into places where a 10-inch plier feels oversized. Its value is the balance between compact access and useful capacity, not replacing every larger water-pump plier.