The Knipex 90 25 20 PVC Pipe Cutter is a hand pipe cutter built for composite pipe and flexible corrugated protective tubing. This is a pipe cutter designed for making clean, square cuts during plumbing, mechanical, and protective tube installation work. Model Number: 90 25 20. If you work with multilayer composite pipe and protective conduit on the same job, this tool is built to keep both cuts controlled and repeatable.

What matters here is the range. This cutter handles composite pipes from 12 to 25 mm or 1/2 inch to 1 inch, and flexible corrugated protective tubes from 18 to 35 mm or 3/4 inch to 1-3/8 inch. That means fewer tool swaps when you're roughing in water lines, running protected tubing, or trimming pipe to final length before assembly. The moving jaws locate the pipe at a right angle to the blade, which is exactly what you want when the next step depends on a clean, even end.

Knipex builds the body from high-grade chrome vanadium electric steel and uses special tool steel, oil-hardened blades. In plain terms, this is not a throwaway cutter. The steel construction gives it the rigidity needed to keep the cut straight, while the hardened blade is made to hold up under repeated use on modern pipe materials. The galvanized finish adds another layer of jobsite durability.

Day-to-day usability is well thought out too. The opening spring speeds up repeated cuts, especially when you are trimming several sections in a row. The locking lever keeps the tool closed when it is riding in a bag or drawer. Knipex also uses multi-component grips, which matter on a hand tool like this because comfort and control are what keep one cut from turning into ten sloppy ones by the end of the day.

Another strong point is serviceability. The blade is replaceable, with replacement options listed as 90 29 01 for composite pipes and 90 29 02 for protective pipes. That is a real advantage for contractors and maintenance techs who would rather maintain a good cutter than toss it when the blade eventually wears. There is also provision for fitting a calibration arbor for certain Geberit composite pipe sizes, including 11.5 mm and 15.0 mm.

At roughly 8-1/2 inches long and about 0.73 to 0.745 lb, this cutter stays compact enough for service work and tight mechanical spaces without feeling undersized. It is a smart fit for plumbers, HVAC installers, remodelers, and anyone working with composite pipe systems or protective tubing who wants cleaner prep, better fit-up, and a cutter that can actually be maintained over time.

Knipex 90 25 20 PVC Pipe Cutter is the smart buy for clean pipe prep

If you install composite pipe and protective tubing, this cutter covers both jobs with the kind of clean, square cut that saves time downstream.

• Who it's for: Plumbers, HVAC installers, remodelers, and service pros working with multilayer composite pipe or corrugated protective tube.
• Why it stands out: The jaw design helps keep cuts square, the blade is replaceable, and the build quality is what you expect from a serious Knipex hand tool.
• Worth knowing: This is a specialty cutter for specific pipe types and sizes, so make sure your material falls within the stated diameter ranges before you buy.

• What materials is this cutter designed for? It is designed for composite pipes and flexible corrugated protective tubes.
• What size composite pipe can it cut? It cuts composite pipe from 12 mm to 25 mm, which is about 1/2 inch to 1 inch.
• Can the blade be replaced? Yes. Listed replacement blades are Knipex 90 29 01 for composite pipes and 90 29 02 for protective pipes.
• Is this cutter suitable for straight, square cuts? Yes. The moving jaws are designed to position the pipe at a right angle to the blade for right-angled cuts.