The IBM System X3550 X3650 Rackmount Server Left Right Slide Rail Mounting Kit Set is a set of two mount hardware designed for rack-mount servers. The slide rail mounting kit is specifically for servers that have a rack unit width of 19 inches, providing a secure and stable mounting solution for the servers. The brand associated with this product is Rackmount, known for providing reliable rack mount solutions for various networking and server setups. With this mounting kit set, servers can be easily positioned and installed in a rack-mount cabinet for a seamless integration into an enterprise networking setup.