A non-reactive clear made by Double Helix that has imperfections. The glass is COE 104
Zephyr is a clear glass that has been formulated to melt smoothly and easily, resist boiling and scumming, have a low reactivity with silver lustres, exhibit a low seed count and have a pristine surface due to careful handling.
Available in 5mm
All tested compatible with Effetre Clear 104 coe.