This 50mL boiling flask is made from heavy-duty borosilicate glass and features a flat bottom with an interchangeable screw thread joint in socket size 14/23. The flask measures 3.5 inches tall, with a 1.25 inch diameter base and 2 inches at the widest point. The borosilicate glass construction is autoclavable with superior chemical durability. It withstands high temperatures and thermal shocks, with heat tolerances including a Strain Point of 515°C, Annealing Point of 565°C, and Softening Point of 820°C. The screw thread joint provides a secure, interchangeable connection for use in distillation, reflux, and other laboratory configurations.