One-Piece Reaction Vessel, 5-Nk, 50mL: 19/22 Outer CN, (1) 10/18 Outer SN, (1) 14/20 Outer SN, and (2) 19/22 Outer SN's. Vessel is graduated from 10 to 50mL. Body outside diameter is 43mm. Equivalent to Mettler EasyMax 102/402 Part # 5116172.Mettler Easymax® is a registered trademark of Mettler Toledo.