The Rails, Intel 2U/4U Premium VES-212-2123-00 LEFT(A) & RIGHT(B) No Inners are high-quality rack rails designed for mounting servers and networking equipment in 2U and 4U rack cabinets. Made by Intel, these rails come in a set of left and right sides, with the model Intel AXXFULLRAIL. These durable rails offer a secure and efficient way to organize and install your IT equipment in a data center or server rack, providing stability and support for your hardware. Perfect for enterprise networking and server setups, these premium rails ensure proper alignment and support for your equipment.