The Chemglass reaction head/vessel lid, model CG-1968-04, has seven (7) top ground joints, all vertical: one (1) 45/50 center neck, four (4) 45/50 side necks, and two (2) 29/42 side necks. Conical in shape, the flange measures 300mm.
Condition: Excellent, previously-owned, used. Sold "as is" without warranty expressed or implied. Buyer is responsible for determining the suitability of this product for their application.