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Visual Comparison of Phillips Screwdriver and JIS Screwdriver, the Japanese Industrial Standard. The Phillips Screwdriver and the JIS Screwdriver have different designs for the tips of their screwdrivers. That is why the Japanese Industrial Standard, or JIS screwdriver will out preform the Phillips screwdriver.
To purchase JIS screwdrivers swing by the website, where we sell Vessel. Vessel is the oldest Japanese tool company and founded in 1916 - 20 years before the Phillips came along.
When it comes to motorcycle tools JIS is the only screwdriver that fits the screw.