This pair of 2u server rack rails are designed for DIYER to screw or anchor to the Wood cabinets or concrete walls, to mount studio or networking equipment, like AMP, recording devices, PDU, routers, 19-inches servers, patch panels and so on These rack-mount rails are made of 0.12 inches (3.0 mm) thick SPCC steel, with black powder coating, are strong and durable More sizes are available, from 2u rack rails to 4u 6u 8u 10u 12u 14u 16u 18u rails No rack unit number marks on rails. Considering the flexibility of installation, vertical or horizontal, forward or backward, using the unit separation triangle mark is a proper solution for alignment The package comes with 2 pieces of rails and 1 pack of mounting screws RIVECO 2U round holes rails Categories: rack accessories Model size: 2U  2 pieces as one pair wood screws included  10-32 screws included