Manually controlled, made of borosilicate glass 3.3, DURAN, with ground socket 29/32 for a recirculating condenser, ground cone 29/32 for a distilling column, ground joint-socket 14,5/23 for a thermometer with ground joint (or similar), and side PTFE valve (adjustable) for setting the return flow with ground cone 14,5/23 for a collecting flask.
Supplied without the illustrated accessories