an OK garden hose quick release coupling

over the course of the winter my Hoselock quick release coupling broke for no reason. i was going to get a new one but when i saw the price of a whole fiver i was like "not on your nelly Mr. Hoselock". so now I've used about a fivers worth of plastic and spent about 20 hours of R&D time to produce a leaky but OK coupling of my own. worth it, haven't decided yet.

Whatever, it gets the job done!

i have included a couple 3/4" BSP test threads. i have found that they only screw together if it