Based on this product's specifications, here are some alternatives and similar models
Fibre optic connector QOLTEC 54171 — QOLTEC model 54171
Summary description:
Fibre optic connector QOLTEC 54171 is a passive optical connector designed for joining or terminating optical fibres. The product provides standard mechanical interface for fibre links, suitable for use in cabling, patch panels, or equipment connections. Use cases include fibre optic installations, repairs, and network maintenance where a compatible connector is required.