The product is a set of vintage AT&T RJ45 modular plugs and Ethernet keystone jacks, designed for use with Cat 5 and Cat 5e networking cables. The jacks feature a female Ethernet connector (RJ-45) and are compatible with various models of 5-5e Keystone Jacks. Made in China, these units are constructed with solid cable material and come with a California Prop 65 Warning regarding potential health risks associated with nickel exposure. Ideal for networking setups, these AT&T products offer reliable connectivity options for various devices.