The Apogée clearomizer features a Pyrex with a metal cover, which helps to reduce the frequent breakages of this crucial part. You can order this piece in either steel or black, as well as the inner Pyrex alone, which you can replace within your metal cover by disassembling it.
The Pyrex without the metal cover for a more classic look is included in the Apogée kit and will soon be available for purchase. The standalone Pyrex currently sold can only be used with the metal cover.