Cage System Support Rods are used to securely assemble TECHSPEC Optical Cage Systems. Cage System Support Rods are comprised of several sizes of stainless steel support rods designed to form the main support structure of an optical cage system. Cage System Support Rods fit smoothly into Cage System Plates to easily assemble modular optical systems. Cage System Support Rods also allow optical mounts to slide along the length of the rods, removing the need for large slides or stages.