Vessel 910 Megadora +1x100 (JIS) +1 Screwdriver

Excellent quality construction, with very positive and secure bite. Handle makes gripping easy and comfortable.

The Phillips screw is ubiquitous. It was patented in the 1930's and used to be exotic stuff. Once upon a time, users had to pay a royalty to use them. Cadillac started using Phillips screws in the late 1930's, and was considered cutting edge for it. Of course the complaint from mechanics back then was that they had to purchase "exotic special drivers for these screws from Mr. Phillips!" :-)In the intervening years, we had massive industrial growth, spurred in large part by a world war. Phillips started showing up everywhere. Meanwhile, and as a side effect of that war, we destroyed most of industrial Japan with firebombing (1944-45). The offshoot of this wholly unpleasant experience was that the Japanese were in a good position to restart their industries and to reconsider a whole lot of stuff.One thing the Japanese "reconsidered" was the Phillips screw. They were already not regulated by Phillip's patent, since it was a US Patent, and who in Japan would ever need a screw anyway, right? :-)Meanwhile, after careful and very inscrutibly Japanese introspection, their engineers realized that with slight adjustments of the tip dimensions, the concept of Phillips' "cross type" screw could be improved. Imagine that! So, left to their own devices, the Japanese did that redesign and came up with their very own industrial standard. That was then called the "Japanese Industrial Standard" for cross screw, aka "JIS".Guess what? They were right. Which leads to this product review. This Megadora manufactured JIS standard driver outperforms Phillips designs in every measurable way, just as most JIS drivers do. JIS is so good that it WORKS better in Phillips profiles than does a typical Phillips screwdriver! And, when used in true JIS fasteners (the ones with that little dimple on the screw face) they are the only way to go to get out any JIS standard screw that is even close to tight. Need to work on that vintage Japanese motorcycle? Every screw is JIS. How about that 1970's Pioneer home stereo? Again, EVERY cross screw is JIS.Besides out-Phillips-ing a Phillips driver, a mere TWO sizes of JIS drivers cover about 95% of every screw you're likely to encounter on average applications. Best of all, Megadora JIS drivers don't cam out, disfigure the fastener, and generally make you cuss like those crappy #2 Phillips you've been unknowingly fighting with all these years.Do yourself a favor - ESPECIALLY IF YOU WORK ON MOTORCYCLES OR JAPANESE BUILT STEREO EQUIPMENT. Order yourself up a nice set of Megadora JIS drivers. Get +1 and +2 sizes, and go ahead and splurge and get them in several lengths. You will be done buying screwdrivers for cross-screw functions, probably for the rest of your life.Just don't loan them to your buddies. They'll never come back.HIGHLY recommended - 6 stars. :-)

Works great on +1 JIS screws. I'm too dumb to understand cm apparently, so the shaft was shorter than I expected. The handle is small which is really my only complaint. I wish it was a regular full sized handle.

When you need to remove very small screws from items built with Japanese Industrial Standard fasteners, you will need JIS screw drivers to keep from camming out and damaging the screw. They work like magic.Find a complete selection in Amazon under Vessel.

If you work on your Japanese motorcycle, or other Japanese vehicle, then JIS (Japanese Industrial Standard) screwdrivers are an absolute MUST have because they are designed to properly fit in the phillips screw heads that they use during manufacturing. If you try to use the standard American screw drivers on the JIS screw heads then you will likely strip them before you are ever able to remove very tight or stubborn screws.After getting tired of drilling out stripped JIS phillips screw heads, I finally decided to spend the money on a proper set of JIS screwdrivers. My research eventually led me to the conclusion that the Vessel brand of screwdrivers are the best on the market. I bought a complete set, and absolutely love them. Was finally able to remove all of those stubborn screws from the 20 year old carburetors on my Suzuki motorcycle.These aren't the cheapest thing on the market, but worth every penny. Quality tools are the most important thing when you are working on a project. Saves a lot of extra work and frustration to have proper mechanics tools on hand!