Large Scale Sharpening Stone Plastic Modelshttp://www.hu-friedy.com/fail/instrument-sharpening%7Cinstructional-aids%7Clarge-scale-sharpening-stone-plastic-models

LSS299
Large-scale plastic model of Conical Sharpening Stone for educational instruction.
LSS4
Large-scale plastic model of Flat Sharpening Stone for educational instruction.