Specifications: The top of the bottle mouth is round and smooth, which is convenient for pouring liquid. Made of high quality lead-free glass, it is durable, anti-rust and high temperature resistant. Clear scale of the bottle body makes it easy to observe the volume. A variety of capacities can be selected to fully meet your needs. Type: Conical Flask Material: Lead-free Glass Product Specifications: 50ML, 100ML, 150ML, 250ML, 500ML, 1000ML Features: Easy to Use, Durable, Thick Wall, Anti-volatile Bottle Mouth Diameter: 23mm/0.91, 24mm/0.94, 24mm/0.94, 26mm/1.02, 30mm/1.18, 33mm/1.30 (Approx.) Bottom Diameter: 52mm/2.05, 65mm/2.56, 69mm/2.72, 83mm/3.27, 108mm/4.25, 129mm/5.08 (Approx.) Height: 100mm/3.94, 115mm/4.53, 122mm/4.80, 155mm/6.10, 183mm/7.20, 230mm/9.06 (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Conical Flask (Others Not Included) The top of the bottle mouth is round and smooth, which is convenient for pouring liquid. Made of high quality lead-free glass, it is durable, anti-rust and high temperature resistant. Clear scale of the bottle body makes it easy to observe the volume. A variety of capacities can be selected to fully meet your needs.