Round bottom glass flask,Glass Boiling Flask,Two necks,2000ml,joint are all 24/40. Made From Borosilicate Glass 3.3 Volume:2000mlJoints: 24/40 & Two necks Welcome to our store! We are honest and trustworthy seller. All pictures are of real products. Please just bid with confidence! Your satisfaction is our first priority. Thank you!! Customers Note Shipping: We only ship to paypal confirm address. 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 ePacket,EMS,USPS,UPS,FEDEX,DHL shipping. Faster shipping is available upon request. Extra shipping charge will apply. All products will be shipped out after 48 hours (except Saturday, Sunday, and Holidays). Combine shipping is available. Contact us: Please just contact us no hesitation via eBay message system if you have any question about the items you interested in. We will be very glad to help you. We try our best to reply to your emails ASAP.