OEM 20ml clear gc vials with crimp top manufacturer from 300uL Micro-Insert, 31*6mm Clear, Flat Bottom, Suits for 11mm Crimp-Top Vials: 250uL Conical Micro-Insert, 31*5.7mm, Suits Application: Suitable for 8-425, 9mm, 10-425, 11mm snap vials Material: Glass