Adapter,vacuum with PTFE stopcock ,24/40 joint

This is vacuum adapter with PTFE stopcock from Laboy glass.
Used to regulate the flow of gases or liquids into reaction systems.
PTFE stopcock has a bore of 2mm.
Hose connection has an O.D. of 8mm at the middle serration.
made of borosilicate glass 3.3.
For organic chemistry lab use.
For more size ,please contact us by email.
Please kindly notice ,the picture is just for showing,but for the correct size.