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

Wasnt sure if I could use this with not much hand strength; but this was easier than I thought. I kept losing the little pre-drill screws. This was a great find. And TWO for the price was even better.

IF yours doesnt punch holes, you have to open up the front part and change the direction of the spring. The spring that is closest to the hole punch part. For some reason the spring I received way put it backwards so it was catching on the mechanism inside and not pressing into the whole fully.

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.

It malfunctioned on 3rd use, not sure how long it will last.

Its easy to use for pushing down but if you have a project which requires a push upwards or sideways, this tool isnt strong enough.

Item description: Automatic Center Punch x2 Brand: Karmiero Item: B0BR8B8XKJ Date received: 2023-03-09 Headline - Nice value; good to have one in each toolbox, and useful in the car as well. Product Claims 2 ct Automatic Center Punch I received exactly what was claimed in the product description as to quantity (2 ct) and type (automatic center punch). The items came in a white pasteboard box, each within its own heat-sealed plastic bag. There were no instructions for these (none really are needed). Each item is purely mechanical, operated by spring/ratchet action. You merely push down with the pointy tip at the place you want a starting punch, and the spring loaded internal hammer loads up and knocks the point into the material. If you need a deeper mark, or the material is hard, you can repeat this action several times to create a larger mark. These also have utility to keep in your car, as a window breaker, in case you end up in high water due to going off the road or mistakenly driving into deep water during a flood or hurricane. These are relatively inexpensively made, based on a now-standard long-ago design (my grandfather, a machinist in his early years known for making many of his own tools, made his own automatic center punch to essentially this design, circa the 1920s), but they are solid steel and should last awhile if you are using them in soft or moderately hard materials. You can touch up the point with a grinder or sharpening stone as needed. The point of these is probably not hard enough to put a mark into a hardened steel.

Item description: Automatic Center Punch x2 Brand: Karmiero Item: B0BR8B8XKJ Date received: 2023-03-09 Headline - Nice value; good to have one in each toolbox, and useful in the car as well. Product Claims 2 ct Automatic Center Punch I received exactly what was claimed in the product description as to quantity (2 ct) and type (automatic center punch). The items came in a white pasteboard box, each within its own heat-sealed plastic bag. There were no instructions for these (none really are needed). Each item is purely mechanical, operated by spring/ratchet action. You merely push down with the pointy tip at the place you want a starting punch, and the spring loaded internal hammer loads up and knocks the point into the material. If you need a deeper mark, or the material is hard, you can repeat this action several times to create a larger mark. These also have utility to keep in your car, as a window breaker, in case you end up in high water due to going off the road or mistakenly driving into deep water during a flood or hurricane. These are relatively inexpensively made, based on a now-standard long-ago design (my grandfather, a machinist in his early years known for making many of his own tools, made his own automatic center punch to essentially this design, circa the 1920s), but they are solid steel and should last awhile if you are using them in soft or moderately hard materials. You can touch up the point with a grinder or sharpening stone as needed. The point of these is probably not hard enough to put a mark into a hardened steel.

Wasnt sure if I could use this with not much hand strength; but this was easier than I thought. I kept losing the little pre-drill screws. This was a great find. And TWO for the price was even better.

I like how good they worked

It malfunctioned on 3rd use, not sure how long it will last.