The UHV EB5U has a furnace brazed crucible and high Flow VCR water fittings. Your choice of pocket sizes, 7,15,25,30,40 or 100cc. We Supply a standard coil and emitter with this assembly. The coil connector comes with bare OFHC wire ( 1' is standard length for UHV), ceramic beads will be supplied. If you need more length, ceramic beads can be purchased for the additional length.