250uL Micro-Insert with Mandrel Interior and Polymer Feet, 29x5.7mm for 9mm vials, 100/pk, CV2044 Regular Price: $18.84 Price $16.38 Chromatography Products, ND8, 8-425, Vial and Cap Thread Size 150uL Micro-Insert with Mandrel Interior and Polymer Feet, 29x5mm for 8-425 vials, 100/pk, CV2043 Regular Price: $18.84 Price $16.38