Microsolv Screw Cap white, knurled PP, with white Sil/beige PTFE Septa, for 24-400mm threaded EPA Style vials, 100 pc/PAK

Caps, Screw Top, with White Silicone Rubber / Beige PTFE Septa, fitted in knurled polypropylene, White Caps. For use with 24-400mm threaded EPA Style vials. ND24 threads. MicroSolv Brand