Very sturdy, nice large, flat head, grip well. Head will not break when hammered like cheap ones. Definitely the pin to get for vapor barrier installation.

this product delivered quickly and performed as described. THANKS!!!

Pins are fairly easy to install by handafter drilling the hole. Very good qualtiy pin. Can't comment on durability too much since they've only been on for a couple of weeks. Cheaper then renting and buying foundation nails and gun.

Fun with the hammer drill. Drilling every 2' and 2"-3" from the corners, I pounded in 75 of these tough pins. Only bent one of them and that's because I didn't drill deep enough.

The cement block in my crawl space was a little damp making the double stick tape not the best option. So after speaking with Larry he recommended going with the pins to secure the 12 mil and then the polyurethane caulk just above it to make a nice waterproof seal. As usual, Larry was right on the money and it worked great. I recommend getting one more bag of pins (or a tube of poly) than you think. It's better than having to reorder, pay shipping.and more importantly, having to stop your progress.