1/2" drip irrigation fittings are designed to work with .580 o.d. tubing. What is unique about our fittings is that they are compression and hose threaded.
Compression for putting the tubing inside the fitting.
Threaded with hose threads to screw on anything that has a female hose end. Such as a garden hose, filter, regulator, backflow, ect.
These different ends also can allow you to be able to disassembly your set up by unscrewing pieces as opposed to trying to pull tubing out of the compression end.