The insulator on the left is a CD 170 in light grayish-aqua absolutely chock-full of trad-zillions of microbubbles. The one on the right is a CD 170.1 in lilac-purple with at least few more million milky-way bubbles...the purple one is another view of the same insulator shown within this album (as provided with detail). Both appear to be Pennycuick products.