Based on this product's specifications, here are some alternatives and similar models
Power extension cable InLine IEC-C15 to IEC-C14 straight, 3 m
Summary description:
InLine power extension cable with straight IEC-C15 (hot condition) to IEC-C14 connections, length 3 m. Provides a female C14 coupler to male C15 coupler interface for connecting equipment that requires a C15 hot-condition inlet. Suitable for IT equipment, power distribution units and devices with high-temperature-rated connectors where a short extension or repositioning is needed.