Round bottom flask, single neck,500ml,24/40,heavy wall 　 Capacity: 500 mL Material: borosilicate glass 3.3Joints size: 24/40 Condition: Brand New, never usedItem location: California, USAIn stockSpecial capacity, joint size, and custom made are available upon request.We also supply school experimental kit. Please contact us for more detail.Customers note, please read before you buyPayment:We accept PayPal only. Payment must be received within 3 days of product end date.Shipping:We only ship to Paypal confirm address only. Please match your address with Paypal before you make a payment. We ship worldwide! Buyers are responsible for duty tax. Please kindly leave your phone number for fill out international shipping label purpose. We use standard USPS shipping. Faster shipping is available upon request. Extra shipping charge will apply.All products will be shipped out after 24 hours (except Saturday, Sunday, and Holidays). Combine shipping is available. Postage will be recalculated. Shortage & breakage:We take responsible for damaged items during shipping. Customers will have free replacement and free shipping. Please contact us right away if any broken items are found while you open the package. Return policy:Money back guarantee. If you are unhappy with the items please send them back within 7 days in the original packaging and condition, and you will get a full refund less the shipping. Please do not return products without our permission. Contact us:If you have any questions please contact us through eCRATER messages.