SvoëMesto Kayfun PRIME - PEI (ULTEM) Tank Kit
The optional PEI Tank Kit for the Prime is cool modification that allows you to monitor your e-liquid level without losing the aesthetics of the steel tank. The kit includes a matching Drip Tip made of the same robust thermoplastic material (polyetherimide), also known as "Ultem".
The max. fill volume is 3.3ml with this tank.
I bought 2 of these and they are really nice on the Prime's I have. Not much to say...it holds a tad more juice than the standard glass kit. Dicodes-USA is excellent to deal with. Fast shipping. Thx!!!