Inserts for screw thread and crimp top vials. Supplier: NSC (NATIONAL SCIENTIFIC COMP. Description: Vial insert, Glass, MicroSert™ insert, flat bottom, for standard opening crimp top vials, 0,25 ml, Ø×H: 5×31 mm. ,NSCAC4012-465EA,NSCAC4012-530EA,NSCAC4012-529EA,NSCAC4012-530PEA.