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

Doesnt work like it suppose to . Cheap made and no good to me !

I really like these centering punches. Ive been working on a project that involves drilling dozens of holes in mild steel. My old punch (another automatic) never left a satisfying dimple to start a drill bit. It would leave a mark to line things us, but it wasnt deep enough to ensure that the bit wouldnt wonder. Well not these punches! The point on these punches is sharp and suepr hard. The spring has a terrific punch to it and is strong enough to get a good start in any metal or wood surface. My drill bits of various sizes were always right on center following the dimple from these punches. Highly recommended.

karmiero 2 Pc Automatic Center Punch Remarkably, both of the spring-loaded automatic punches worked the first time. The grip is easy to maintain. First, I tried various types of wood. The pressure to activate the punch is minimal. Each time it scribed a hole mark. I then went to metals such as aluminum and steel. The steel required spring adjustment to get a good visible hole. The punch never slipped and was accurate. The tools are easy to assemble and disassemble. Well manufactured, and no detectable flaws. Excellent value.

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

I had a typical center punch, basically a sharp screwdriver type implement and as some tools do, it walked a while ago and I have been having to make do. One thing I do frequently is put holes in frames for screws for the hangers. This might be overkill, but I’ve been using the side of scissors and small screwdrivers. This does the job and is more accurate. Two for $4.99 is a great price

After 1-2 week of use.

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.

Replaced a 30 year old punch and these are great! So far the points seem to hold up well and the spring action is great.

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!

It seems like a bit of a stretch (i.e. that the spring impact will punch an adequate drill spot or mark). But it does! I tried it on alloy carbon steel...and it left just the right sort of dimple for the hole to be drilled. Its hard to predict how long the punch will maintain its point (before re-sharpening needed). I made a little holder for this useful too, between the drill press and the bench vise. ~ The Duffian