Work as advertised and make putting up 20mil liner on the walls much more secure and professional. Use a professional type hammer drill (I used this project as an excuse to purchased a mid-level Bosch rotary hammer)and you will be done in no time. After inserting the pins by hand/thumb, I used my soft rubber mallet to give them a nice little tap. Be a pro and don't leave this step out.

Worked perfectly.

Great product, don't know if there is anything that comes close. I looked, and found nothing that will work as well. simple, affordable, effective, what more can you ask for?

These are a must have! Use a 1/4" drill bit (Wood / Masonry) and "hang" the liner as you stick it to the double-sided wall tape. This prevents it from being pulled off the tape as you work your way down the wall. Our crawlspace was real nasty, so nasty and tight I couldn't get a contractor to take the job. Glad they didn't... I did it myself for cheaper and probably did a better job.

Easy to install. Great product.