This thing is pretty good in the quality of it's build. However, it isn't very effecting at attracting mosquitoes. It's lights don'y work nearly as well as other zappers I have owned in the past. And the grid for zapping is only on one side of the machine. With that being said, when this thing does attract the bugs into it's grid.... POOOW it zaps the heck out of the bug with a violent popping noise.
I still get bit up with this thing turned on in my bedroom.....
Single Swivel Lifting 0.3" Rope Pulley Roller Block Sheave 0.03 Ton PS
Aug 06, 2016
For the price.... Can't beat it
This little guys are all metal construction and seem quite sturdy. They are made with what appears to be galvanized steal, other than the little wheel that spins. It is made of a cheaper metal and is not smooth like this items pictures would suggest. It has little ridges along it's circumference and has a full two or so mm of play inside it's housing.
Note: I purchase the smallest size pulley available
CONTROL DEVICES PR25-000 Pressure Relief Valve, 1/4in., 0 to 20 psi
Aug 06, 2016
Works great for my low psi application
If you want to use this thing for very low psi, make sure it is facing upward. Their is a small metal ball in it with a spring that has adjustable tension. At very low psi the spring isn't engaged at all, so it needs to be facing upward so the ball wont fall out of place