Transducer Lab, N26CR2-G Ceramic Dome Tweeter with Glass Fiber Voice Coil Former.
These tweeters are made in Idaho, USA. They are built to European standards and come in less than most competitive brands.
The ceramic dome was the first in a series and is outstanding. They are sold in matched pairs. The voice coil former is glass fiber and the faceplate is anodized aluminum and round in shape. A protective grille is available.