IP250-I(Economy) IP250: VP101: VP103: Description: 300uL Micro-Insert, 31*6mm Clear, Flat Bottom, Suits for 9mm Screw top Vials: 250uL Conical Micro-Insert, 31*5.7mm, Suits for 9mm Screw top Vials: 250uL Micro-Insert with Mandrel Interior, & Polymer Feet, 29*5.7mm, Suits for 9mm Screw top Vials: 0.3mL Clear PP Screw top Micro-Vial, 11.6*32mm