Condenser, Reflux, 395mm, 29/42 Joint, 250mm Jacket Length. Reflux condenser having an internal coil that is water jacketed. Vapors are condensed both on the coil and the inner wall of the jacket. The top end has a standard taper outer joint and the lower end has an inner drip tip joint. Hose connections have an O.D. of 10mm at the middle serration.