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

Center punch easily. Very strong.

They work well for what I need them for.

Overall, decent bit of kit. When mine arrived thankfully in a sealed plastic bag, had to assemble one of the punches as it had separated into individual pieces parts in shipment and the other was extremely loose. The listing says adjustable, but it to a bit of fiddling to figure out just which end to use. Some instructions would have been nice as it is not intuitive but finally figured it out.

The tips seem good enough - they haven't dulled or deformed. But, many times, the center punch won't "punch". Obviously something isn't quite machined correctly. I can turn it around and find a spot that will work. I expect that the small ledge inside is not concentric, so only works in some areas.But, it is inexpensive, so you get what you pay for. I don't see any signs of wear or damage, so the materials are appropriate for the job.

I bought these I use them a lot easy to use good product.