Are you looking for a creative and practical flask for your laboratory experiment? Our production can meet all your requirements with and reliable material for . It is designed with clear scale and workmanship for high temperature resistance with wide using range. Features -Color: As Shown -Material: High Borosilicate Glass -Size 50ml: 8.70X5.10X1.90cm/3.42X2.00X0.74in -Size 100ml: 10.30X6.50X1.90cm/4.55X2.55X0.74in -Size 150ml: 12.10X7.10X1.90cm/4.76X2.79X0.74in -Size 250ml: 15.20X8.60X2.40cm/5.98X3.38X0.94in -Made of eco-friendly glass material, , safe and odorless. -Standard capacity: clear scale, easier to identify for accurate measurement. -Excellent product quality, with quality assurance. No bubbles, no burrs, smooth and rounded. -More convenient to use for students in school laboratory when doing experiments in chemistry class. -The is widely used in organic chemistry, in a distillation or vacuum distillation apparatus, etc. Package list: 4 x Conical Flasks