While you still find tons of the HK PORTERS, you don't seem to see too many of these Delta Star plasitc insulators. Not sure if these are lexan or what, but they are pretty darn sturdy and will take a lickin and keep on tickin. This one is not yellowed, brittle or cracked but in like new condition. Normally these are aged, brittle and ready to fall apart. If you like to collect the different types of composites, rubbers and plastic insulators, why not add this perfect specimen to your collection? $4 + $3 shipping.