CHEMGLASS Glass Connecting Style B 24/40 Joints Airfree SchlenkAdapter  / ConnectorAdapter has a 0-4mm Chem-Vac / Chem-Cap valve between the top outer and lower inner joints, both of which are the same size.  while Style “B” has the valve 90° to the joints with a brace permitting hanging of heavier objects from the line. Overall length is approx 190mmUSED EXCELLENT CONDITIONlist price:$140.00Thank you for looking at our items. You are always welcome to come by and inspect the item(s) before you bid. If you are local, we would always prefer you to come and pick up your won items. We are located at CAL-L ENTERPRISES 9751 Independence Ave, Chatsworth, CA 91311 TEL: 323-394-7124 FAX: 818-668-5064 EMAIL: cal-l at att dot net WEBSITE: cal-l dot com HOURS: Monday – Friday 9:00am – 5:00pm We are more than happy to meet with you, just give us a call to set up a time. Shipping costs ARE AN ESTIMATE ONLY!! The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item