The car-wheel borer was purchased second hand for the Sierra Railroad shop in 1909. The kit consists of 34 detailed white metal castings including overhead drive pulleys, belt material, wire, and chain. The 12 page instruction booklet includes detailed AutoCAD drawings as well as a complete description of how the machine is used. A color photograph is included for paint reference. The models stands 2 1/8" high and needs a floor space of 2"x2 1/2". This machine would be found wherever freight or passenger car wheels were repaired.