SOLD - This is a previously-owned (used) Chemglass addition funnel, 250mL, graduated, airfree, Schlenk, model no. AF-0551-04, with glass stopcock on the sidearm but no Chem-Vac™ Chem-Cap® cap plug on the lower threaded joint. The top and bottom ground joints have a size of 24/40.Condition: Excellent, clean, previously-owned, used; no cap on the lower threaded joint. Sold as is without warranty expressed or implied. Buyer is responsible for determining the suitability of this product for their application.