Graham-Field 3085DZ Grafco Hoffman Screw-Compressor Clamp for Flexible Tubing, Open Style, 1/2" x 1/2", Pack of 12

A little too chewy for me

It works but not ergonomic, very awkward to adjust for two reasons. Small size of the thumb screw. The portion that squeezes the tubing is smooth and roundish so tubing do not stay in place whilst squeezing the screw. I strongly suggest the following clamp, bought only one to try - expensive but fantastic and very easy to control the flow right down to drops at a rate of one drop per few seconds etc !.Grafco Hoffman Screw-Compressor Clamp for Flexible Tubing, Open Style, 1 x 7/8", 3083DZ (Pack of 12) the one I have tried out and the best is expensive but worth it. The second choice I found out is much cheaper but have not tried out but definitely much better than the one reviewed here. That is HUMBOLDT H-8722"Easy Grip" Screw Compressor Clamp, Open Jaw, 0-5/8" Max Height, 1" Max Width.

Quality and the ease of use highly recommended for anyone who has fountains or fishpond that you can attach to tubing without having to disconnect the tubing and reduce the water pressure.

These are a good idea, but the inner square piece that is pressed in to clamp kind of turns funny, doesn't really stay in position, and the screws a bit wobbly in the threads. They worked for what I wanted, just had to mess with them to get them to align very well.

was just what I was looking for a small project

So, I would not want to use this on something of real value as the materials could be stronger but overall it does work.

The swivel tops come off very easy but the good part of them breaking off is the head of the screw tightens up on the back part better.For what I use them for it's better with them off. So if you have purchased this item and had the same problem as I had just use them without the swivel tops. Hope info helps BILL

I needed this compressor clamp to act as mini-c-clamps and with a slight modification (removing the pressure plate) I was able to and all of my problems were solved!

Very cheaply made. Does not tighten to hold anything. Flimsy. Don’t waste your money......and wasting your money is what you’ll be doing since Amazon won’t do returns on this faulty item.

The clamps are good , just a fraction to small for my application.

Very cheaply made, therefore they did not work as advertised.

The small clamps worked well for attaching my insulated skirt under my trailer.

extremely poor quality