Microsolv Headspace Crimp Cap gold, steel, magnetic, 8 mm center Hole, with Grey Butyl Rubber/Transparent PTFE Septa, for 20mm Crimp Top Headspace

Caps, Headspace, Crimp Top, with Grey Butyl Rubber / Transparent PTFE Septa, fitted in Steel, Magnetic, Gold Caps with 8mm center holes. For use with 20mm Crimp Top Headspace Vials. BASIK Brand. 1000/CS.