Automatic Center Punch Set, 2 Pack 6 & 5 Automatic Centre Hole Punch, Super Strong Adjustable Impact Center Hole Punch Tool, Marker Scribe Spring Loaded Punch Tool for Glass Metal or Wood

Absolutely garbage. Get a name brand or even a harbor freight one. These are not worth owning if they were free. Returned. Not returned because i needed my $8 back. Was more inconvenient that anything. I returned because whoever is making these deserves to not be making these sooner than later.

The smaller one is ok - hammers 90% of the time. The bigger one almost never actuates correctly. And I tried to adjust whatever can be adjusted.

the larger one requires considerable force but leaves no visible mark on mild steel.

Works well on cabinet hardware installation

Only use it a few times before the tips got no and one of the springs I had to change out already in the big one my opinion not worth the money

great for woodworking also

There is better out there for sure. Wish I would had spent 5 more dollars.

Great compact solution to marking for drilling or layout plans on multiple surfaces.

Just got my punched today the smaller one works good the bigger does not work at all very disappointed figure it would work

The large one sucked no power at all the little one worked awesome very strong plenty of power