These are great concrete screws, they appear very well made, durable, and have a durable water resistant coating as well.

These are great concrete screws, they appear very well made, durable, and have a durable water resistant coating as well.  Read Less

This drove into the hole drilled with the included concrete bit very quickly and held very well.

This drove into the hole drilled with the included concrete bit very quickly and held very well.  Read Less

These screws are built with very strong ribs.

These screws are built with very strong ribs.  Read Less

I drilled one of these screws into a thick, dense chunk of wood with no pilot hole and it doesn't show even the slightest sign ...  Read More

I drilled one of these screws into a thick, dense chunk of wood with no pilot hole and it doesn't show even the slightest sign of stripping despite the amount of torque it took to drive it all the way in (see my review photo where cheaper screws snapped before driving all the way in).  Read Less

Also the plastic box was broken and needs to be taped so the non-used screws don't fall out.

Also the plastic box was broken and needs to be taped so the non-used screws don't fall out.  Read Less

These concrete screws perform like the blue name brand screws.

These concrete screws perform like the blue name brand screws.  Read Less