Item was delivered after 47 days from Cn to Western Au, via Malaysia Post (which does not provide much tracking information). It is as expected. The screw thread fits well on all the Imperial, and also the Metric standard UHF sockets and adaptors that I tried. The dielectric was tested with a 340C soldering iron and did not melt. It also has the characteristic look and low friction feel of PTFE. These are good quality and fairly good value for your money.
all ok