One joint size 14/23. This set contains 9 items with 14/23 joint size for maximum versatility. Housed in diecut foam lined box. Consists of 1 Flask, pear shaped, 50 ml 1 Still head 1 Liebig condenser 1 Screwcap adapter 1 Receiver adapter 1 Air leak / steam inlet tube 1 Dropping funnel 50 ml with GP rotaflow tap 1 Stopper 1 Thermometer