Product Information. Vial. 2ML-9-V1001. 2mL, Clear Glass, 12*32mm, Flat Base, 9-425 Screw Thread Vial,100pcs/pk. USP Type 1, Borosilicate Glass. 2ML-9-V1002. 2mL, Clear Glass, 12*32mm, Flat Base, 9-425 Screw Thread Vial with White Write-on Patch and Graduation Lines. 100pcs/pk. USP Type 1, Borosilicate Glass.