This is a set of two main units (ceiling mounts) for the Kawaguchi Giken indoor HOSSCREEN SPC-W. I purchased this as a set with the poles, but I only wanted to use the poles, so I am selling the main units. Contents: SPC type main unit: 2 Main unit mounting screws: 4 Instruction manual Usage: Attach to the ceiling and insert the separately sold dedicated poles to use as an indoor clothes drying rack.