DrySyn Parallel Synthesis Kit: Includes MULTI-E base with heat resistant handle and 1 pack of DrySyn Reaction Vial Inserts of any standard size below. Please specify size when ordering. Reaction Vial Inserts come in the following sizes - 4 position unless stated otherwise.(size refers to the diameter of the hole) 11.80 mm (will fit 2 mL HPLC sample vials) This size is a 9 position insert. 15.00 mm (will fit 1 dram vials) 16.20 mm (will fit CEM microwave tubes) 17.40 mm (will fit Biotage 2-5 mL microwave tubes & for 2 dram vials) 20.20 mm (will fit robot tubes) 24.40 mm (will fit 24 mm boiling tubes) 25.75 mm (will fit Wheaton reactor vials) 27.65 mm (will fit 20 mL Scintillation vials) 28.20 mm (will fit Biotage 10-20 mL microwave tubes)