<https://labsociety.com/lab-equipment/vacuum-take-off-adapter/#product>
<http://schema.org/description>
"Vertical Vacuum Take-Off Adapters are used to add a vacuum line to a set-up that previously had none.\r\n\r\nThis adapter from Chemglass has an upper and lower joint size of 24/40."
<https://labsociety.com/lab-equipment/vacuum-take-off-adapter/>