Based on this product's specifications, here are some alternatives and similar models
NETRACK RJ45-to-RJ45 Coupler Patch Connector Category 6 UTP 106-71
Summary description:
Inline RJ45-to-RJ45 coupler by NETRACK, model 106-71, designed for joining two Category 6 UTP network cables. Provides a female-to-female connector interface for signal continuity in Ethernet installations and temporary extensions. Suitable for 1 Gbps Ethernet over Cat6 UTP, patching in patch panels, workstations, and short-term cable joins without rewiring.