joint:14#,19#,24#,29# all sizes:200/14,14 200/19,19 300/19,19 400/19,19 200/ ... (1)item:Column,distilling ,vigreux(2)joints:14# 19# 24# 29#(3)all sizes:200/14,14 200/19,19 300/19,19 400 ... 400/29,29 500/29,29(4)Manufacturer and supply all kinds of lab glassware in china. Main products includes beakers ...