High quality 3.3. Borosilicate glassware with joints. This kit contains 9 items all with size 14/23 joint for maximum versatility. The foam lined box ensures safe delivery and acts as a storage unit. Consists of: Flask, pear shaped 50ml, Still head, Liebig condenser, Screwcap adapter, Receiver adapter, Air leak/stream inlet, Dropping funnel 50ml with GP rotaflow tap, Stopper, Thermometer.