2Pcs Heavy Duty Automatic Center Punch, 5 Premium Steel Spring Loaded Center Hole Punch, Adjustable Spring Impact Center Marker Scriber Tool for Metel, Plastics, Wood, Glass by karmiero

I dont think these are fully stainless steel, but thats somewhat expected at this price point. Both of my punches work as intended and require a pretty average amount of pressure to fully engage the punch. I havent tried messing with the spring intensity yet because there was no need, but you should be able to make it firmer or softer depending on your application. Just based on the price I doubt these will last a long time but worst case I have a couple backup/throw away punches as needed.

The mechanism in both United are very difficult to work. Need to repeatedly press the unit down more than once to have the spring disengage and spring back to make the mark. Is is easier to just use a scribe instead of the center points that I purchased. Not happy with the product unfortunately. Thank you.

I have been quite pleased with these! They work great, are adjustable and seem to be well made! - Perfectly simple to use! - Just press your tip point at the very spot you want your bit or screw to start, and press the body down - You’ll feel the quick “pop” of the tool and that’s it! (Use the adjustment to twist yours for more or less spring force) - Absolutely no other tool or hammer required, just point and press! - Would absolutely recommend these! 10/10 a win for me!

I used them to mark holes for screws on metal and they did not disappoint. Heavy duty and Precise.

Made a small prick in both aluminum and hard steel. Although I thought it worked fine I believe a slightly stronger spring would improve it. I used it full tension but would liked slightly more resistance for a little deeper hole.

Nice punches. Took one to work with me for making rivet holes in the plastic. It works great.

Easily adjustable striker. Works perfectly. Built well.

This is a nice punch. Would have given 5 stars, but the first time I used it, the punch did not reload. I took the unit apart but found nothing I could see holding the spring. I banged it on the table and the spring released. After reassembling the punch worked perfectly and reset every-time.

I use these mostly to make an indent for drilling. They work well for that. Ive used them on Aluminum and steel. I recommend clicking them several times to make a good indent so the drill bit stay where it should when starting to drill. You can also use these to break a car window in case you are trapped inside or you need to rescue someone. The parts are all metal and seem to be machined accurate enough to work well. Ive used similar punches that cost many times as much as these and they work pretty much the same.

If you have to drill holes in ...... you can simply start drilling and hope the drill bit actually goes in straight. On metal or on rounded surface you know the drill bit will dance around before catching and scraping up the surface as it goes. These center punches are spring loaded so you simply place it where you want to drill press and it leaves an indent keeping your drill bit centered and straight. A must have for anyone working on metal or plastics. Good quality tool which when you learn how to use you wont ever not want to be without.