Micro-Inserts--Aijiren Hplc Vials Insert. Micro-Insert, 31*6mm Clear, Flat Bottom, Suits for 10-425 Vials 250uL Conical Micro-Insert, 31*5.7mm, Suits for 10-425 Vials 250uL Micro-Insert with Mandrel Interior, & Polymer Feet, 29*5.7mm, Suits for 10-425 Vials. Thermo Fisher Scientific - US - 10mm Clear Glass Wide