The Knipex 90 23 01 BKA KNIPEX DP50 Pipe Cutter is a compact plastic pipe cutter built for drain pipe cutting and chamfering. This is a plastic pipe cutter designed for cutting and chamfering common drain pipe sizes. Model Number: 90 23 01 BKA. If you work with 32 mm, 40 mm, or 50 mm pipe and want a clean finished edge without extra deburring work, this tool is aimed right at that job.

What makes this cutter useful is not just that it cuts pipe. It is designed to leave a clean cut end without needing readjustment or deburring after the cut. On the job, that matters because it helps speed up drain pipe prep and keeps fitting work moving. It is rated for common European drain pipe diameters of 32 mm, 40 mm, and 50 mm, and it handles high-temperature and other plastic pipes with wall thicknesses up to 2.4 mm.

The cutting system is built around a reversible high-quality ball-bearing steel blade that can be replaced without tools. That is a practical feature, not a gimmick. When the edge wears, you can flip or replace the blade quickly instead of sidelining the tool. Knipex also uses slide-bearing and self-adjusting guide rollers to keep the cut tracking properly. That helps the cutter stay controlled and consistent as you work around the pipe.

The blade is spring loaded, so there is no need to readjust during cutting. That saves time on repetitive pipe prep and makes the tool easier to use when you are working in tight spots or trying to keep one hand free. The clear view of the cutting point also helps with alignment, which is a big deal when you are working close to fittings or trying to save material on short sections.

For tight work, the DP50 can cut lengths as small as 10 mm. That gives it an advantage when you need to trim short sections instead of tossing material or switching to another cutter. The housing is made from glass fiber reinforced plastic, which keeps the tool durable without making it heavy and clumsy. At 8 inches long, it stays compact enough for service work, install bags, and punch-list jobs where space is limited.

This pipe cutter is a strong fit for plumbers, HVAC installers, maintenance crews, and remodelers working with plastic drain pipe. It is especially useful for anyone doing repeat cuts who wants a finished edge with fewer extra steps. One important limitation is worth saying plainly: it is not designed for thick wall PVC pipes. If that is your main material, this is the wrong cutter. If your work matches its intended pipe sizes and wall thickness, it is a smart specialty tool that earns its spot fast.

Why the Knipex 90 23 01 BKA KNIPEX DP50 Pipe Cutter Makes Sense

This is the kind of specialty cutter that pays for itself by saving steps every single time you prep drain pipe.

• Who it's for: Plumbers, HVAC techs, remodelers, and service crews cutting common plastic drain pipe sizes and wanting a cleaner finished edge right off the tool.
• Why it stands out: It cuts and chamfers in one operation, the blade stays spring loaded so you are not constantly readjusting, and the reversible blade keeps the tool working longer.
• Worth knowing: This is a purpose-built plastic pipe cutter, not a catch-all solution. It is not designed for thick wall PVC pipes, so match it to the material and it will do its job well.

• What pipe sizes does this cutter handle? It is designed for common drain pipe diameters of 32 mm, 40 mm, and 50 mm.
• Can it cut more than one type of plastic pipe? Yes. It cuts high-temperature and other plastic pipes with wall thicknesses up to 2.4 mm.
• Does it need readjustment while cutting? The blade is spring loaded, so there is no need to readjust during cutting.
• Can the blade be replaced? Yes. The ball-bearing steel blade is reversible and can be replaced without tools.
• Is it made for thick wall PVC pipe? No. Knipex states that it is not designed for thick wall PVC pipes.