Based on this product's specifications, here are some alternatives and similar models
Fibre optic connector FC/PC QOLTEC 54453, single-mode, blue/silver, 3.0 mm, pack of 200
Summary description:
QOLTEC 54453 is a fibre optic FC/PC connector designed for single-mode fibre (3.0 mm). Finished in blue and silver, the pack contains 200 connectors supplied in a polybag. Suitable for splicing, termination and replacement in telecom, data centre and network installations where single-mode FC/PC terminations are required.