Claisen Distillation Adapter 45 degree side arm 14/20?outer standard joints at top and side;?14/20 inner standard joint at bottom;?19/22 outer standard joints at top and side;?19/22 inner standard joint at bottom; 24/40 outer standard joints at top and side; 24/40 inner standard joint at bottom Borosilicate glass, heavy duty and reusable Warranty: StonyLab 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied