Microsolv Headspace Crimp Cap, silver, aluminium, 10mm center hole, with grey Butyl Rubber/partially laminated PTFE Septa, Pharma-Fix, for 20mm Crimp

Caps, Headspace, Crimp Top, with Grey Butyl Rubber / Partially Laminated PTFE Septa, fitted in Aluminum, Silver Caps with 10mm center holes. Pharma-Fix. For use with 20mm Crimp Top Headspace Vials. MicroSolv Brand