1B100-3, 1B100-4, 1B100-6, 1B100F-3, 1B100F-4, 1B100F-6, 1B120-3, 1B120-4, 1B120-6, 1B120F-3, 1B120F-4, 1B120F-6, 1B150-3, 1B150-4, 1B150-6, 1B150F-3, 1B150F-4, 1B150F-6 Clean, high quality, capillary glass for making micropipette electrodes an other research implements Some varieties are fire polished (See Description) See Details for part numbers and quantity in a vial