Greenhouse Clamps for 1/2 Inch PVC Pipe, Greenhouse Hoops,Support Frame, Grow Tunnel,Plant Support Garden Stakes.For Fixing Plant Cover, Garden Plastic Sheeting, Film Row Cover, Net.

I bought the 1/2" version of this product and it worked great on the greenhouse/cold frames we have that are made with the 1/2" EMT conduit (OD is .706"). I also clipped our materials to the T-posts that support our EMT frame, this size won't open all the way around the T-post, but I clipped onto one of the protrusions. It will accommodate several layers of material, in our case we have poly-spun frost blanket covered with 4mil sheet plastic, and in some places had several folds of the plastic (at the corners). The clips open capaciously and the ends don't have to touch together in order to completely tightly grip whatever you put this on. The clips are made of what feel like high quality, thick ABS plastic, and the spring is thick and tight. You have to apply some muscle to open the clamp, but it's not brutal. I'm utterly thrilled with this product. The edges are smooth and I had no issues with them poking through either material. I've gone out and rearranged the clips while it was sunny to ventilate, then closed it all back up tight in later afternoon. Absolutely no issues, works wonderfully well. I plan to order more of these, and also order them in the larger size to have on hand. Versatile clip!I've used a couple of other products made for this type of application-- both the stainless-steel all metal clips and the clamps that are ABS plastic, about 4" long, and press on/pull off, both of which have problems (the metal tears material, and the press on clamps are hard to get on and off and actually can pop off in high winds, and they are pricey). The press-on type are good if you want to layer clips (because they are completely flat), and I used some of mine on the inner layers near the doorway opening to keep everything tight. But, these clips will be my first-line go-to for this function from here on out, and at this price point they are a no-brainer. These clips are fantastic and have helped me save my lettuces and greens through the 2024 arctic blast. I don't know how many seasons they'll last, but they have a good strong feel.

These are amazing quality..I hope they will last me for many years.. I will buy these again.

These clips are very strong, gotta have plenty of hand strength so not recommended if you have arthritis or weak hands. My wife and I had no problems but could see how some might. 4 out of 5 stars for strength only because they do look very this where the hinge pin goes through and suspect cold weather or UV damage will cause this thin spot to fail. Some people mentioned multiple broken clips out of the package, I did not encounter this issue. I bought 3 packages of them and used most of them and not one broke. I gave 4 out of 5 for ease of use just because the clips are a bit difficult to open however if they were easier to open they wouldn't hold as good. It is crazy windy at my house so I used them every 6 inches (15 cm)Bought construction zippers also to open and close our door and a window for ventilation on warm days.

Strong clips that take a bit of effort to open so therefore hold well on the frame I am using.

I wanted these to try and hold my tarp down and they fit the pipe I am using perfectly. They have a good tight grip and hold up pretty good in the wind so long at they are attached properly. I like these clamps.