Ace Glass 9443-10 Flask Head 45/50

Standard interchangeable Mini-Lab head for use with 9448-05 thru -15, 9451 or 9456 Flasks. Top has 14/20 joints with the exception of top center joint which is 19/38, large center joint is 45/50. Side arms are placed at the proper angle so that the thermometer or addition tube can be placed in the flask without interfering with stirring unit.