Mosquito Coils / Screw Removal Tools
The fascinating stories and secrets behind hit Japanese products, plus parts and machines that boast the top share of niche markets. In the first half: the story behind mosquito coils, invented by a Japanese company, which help prevent mosquito-borne diseases around the world. In the second half: we introduce screw removal tools that can remove stripped screws when a normal screwdriver can't.
Ueyama Hisashi, involved with the development of mosquito coils
Takasaki Mitsuhiro, involved with the development of screw removal tools
The tool that can remove a screw by tightly gripping the screwhead