clear 20ml borosil headspace vials with flat bottom for GC Amazon

Wheaton W225283 Borosilicate Glass Clear Flat Bottom Headspace Vial, Beveled Finish, 20ml Capacity (Case of 100): Science Lab Autosampler Vials: Amazon.com: 

100 Pack 10ml Glass Vials, Clear Glass Headspace Vials with Plastic-Aluminum Flip Off Caps and Rubber Stoppers, 20mm Transparent Flat Bottom Lab Vial: 

20mL Crimp-Top HeadSpace Vial - Flat Bottom - Clear 22.575.5 mm [100 pieces]: Amazon.com: Industrial & Scientific.

J&K Scientific 10mL Headspace Vial, Clear Glass, 20mm Crimp-top, Flat Bottom (Pack of 100): Amazon.com: Industrial & Scientific.

J&K Scientific 20ml Headspace Sample Vial, Clear Glass, 20mm Crimp-top, Rounded Bottom (Pack of 100): Amazon.com: Industrial & Scientific.

Colpak TC-200 A Clear Glass Vial, Crimp Headspace, 20 mL, Flat Bottom (Pack of 100): Amazon.com: Industrial & Scientific.

Aijiren Borosilicate Glass Clear Flat Bottom Headspace Vial, Beveled Finish, 10ml Capacity, Case of 100: Amazon.com: Industrial & Scientific.

JG Finneran 320020-2375 Borosilicate Glass Standard Headspace Vial, 20ml Capacity, 20mm Crimp, Clear, 23mm Diameter x 75mm Height (Case of 1000): Science 

10ml Sterile Clear Vials 10 Pack: Amazon.com: Industrial LabZhang 100pcs 10ml Vials-Glass Clear Bottom Headspace Vial with Plastic-Aluminum Flip Off Caps