【New Unused】Nakashima Propeller Shoeshaped Shoehorn This is a special shoehorn from Nakashima Propeller, one of Japan's leading propeller companies. The shoehorn is made from the same material as their propellers. This is a rare item received from an insider. It is new and unused. Nakashima Propeller Co., Ltd. is a Japanese manufacturer of marine propulsion equipment. Headquartered in Higashi Ward, Okayama City, Okayama Prefecture, it holds the world's largest share in marine propellers. It is also the manufacturer of propulsion devices used by the Japan Maritime Self-Defense Force. In recent years, the company has expanded its business into the medical device field, such as artificial joints, which now account for about 10% of its sales. In 1992, they entered the market for boat racing propellers, at one time splitting the market share with Yamaha Motor. However, due to difficulties in securing propeller materials, among other factors, they announced their intention to withdraw from the market to the Japan Boat Race Association and others in August 2013, and officially withdrew in October of the same year.