The Knipex 9R 455 723 KUS 5/32 in. x 6 in. Roll Pin Punch is a hand punch built for removing roll pins without damaging the pin or surrounding workpiece. This is a roll pin punch designed for pin removal and general striking work where a standard straight punch is not the right fit. Model Number: 9R 455 723 KUS. If you work on assemblies that use spring pins, this is the right style of punch to keep in the drawer instead of forcing the job with a drift punch that can slip off center.

The main thing that matters here is the tip design. The center of the punch has a rounded section that fits inside the hole created by the roll pin. In real use, that helps the punch stay centered as you strike it and reduces the chance of flattening or deforming the pin. That means cleaner removal, less frustration, and a better chance of reusing the pin when the job allows it.

Knipex lists this punch at 5/32 inch tip diameter and 6 inches overall length, which puts it in a useful size for bench work, mechanical service, and shop repair. The length gives you enough reach to keep your hand clear while still maintaining control. The 5/32 inch size matters because roll pin punches are not a one-size-fits-all tool. Matching the tip correctly helps prevent slipping and keeps force where it belongs.

Material quality is a big part of whether a punch holds up or starts to mushroom after a few hard hits. This one is forged from hardened chrome vanadium steel and tempered to 54 to 58 HRC through the entire tool length. That full-length hardening matters because the tool is being stressed at both ends over time, not just at the working tip. Knipex also calls out a core design intended to resist mushrooming at the striking end, which is exactly what you want in a punch that is going to see repeated hammer contact.

The body shape is another practical detail. Instead of a round body that can roll across a bench or concrete floor, this punch uses an octagonal profile. That gives you a little more control in the hand when you are setting the tip on a small pin, and it helps keep the tool where you put it. The polished tip also helps with cleaner contact and easier positioning, especially when you're working on small parts and need to see exactly where the punch is landing.

This is an individual hand tool, not a kit and not a general-purpose center punch. It complies with DIN 7255, which is worth knowing if you care about a punch that follows a recognized standard for this type of work. It is also not a 1000-volt insulated tool, so it belongs in mechanical and fabrication work, not live electrical applications.

The Knipex 9R 455 723 KUS 5/32 in. x 6 in. Roll Pin Punch makes the most sense for users who already know the value of having the correct punch for the correct pin size. If you do equipment repair, shop work, metalworking, assembly service, or any job where roll pins show up regularly, this is a small tool that saves time and prevents damaged parts. Serious DIYers can use it too, but it is especially valuable for anyone who has fought a stubborn roll pin with the wrong punch and does not want to do that twice.

Knipex 9R 455 723 KUS Roll Pin Punch for the jobs where the right punch actually matters

This is a purpose-built roll pin punch that saves you from the usual slipped hits, damaged pins, and chewed-up parts that come from using the wrong tool.

• Who it's for: Anyone doing repeat mechanical work, shop repair, or assembly service where roll pins come out often enough to justify a dedicated punch.
• Why it stands out: The centered tip design, full-length hardening, and octagonal body are all practical details that make the tool easier to control and harder to wear out.
• Worth knowing: This is a single-size individual punch, not a set. That is great when you need this exact 5/32 inch size, but you will still want other sizes on hand for a complete punch lineup.

• What is this tool designed to do? It is designed primarily to remove roll pins.
• What is the size of the punch? The punch has a 5/32 inch tip diameter and a 6 inch overall length.
• What material is it made from? It is forged from hardened chrome vanadium steel.
• Is it insulated for electrical work? No. It is not a 1000-volt insulated tool.