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Hitachi bit #2 available at Lowes & Home Depot mimics JIS almost perfectly.... Takes out all my JIS bike fasteners without a hiccup. My go to bit for my Japanese fasteners.

Cory

I've got a set of the regular Vessel screwdrivers and recently picked up a couple of the Impact version to supplement. I love these screwdrivers. I'm rebuilding a set of carbs and the screws lock onto the screwdriver tip super snug. I pulled the butterfly screws (which are tiny) and had no issue with stripping. Fantastic product.

If you want a proper precision JIS screwdriver, you have to make it yourself:



Also, Husky makes some screwdrivers with JIS tips, and most of their metric toolkits I've seen come with a few JIS bits.