VESSEL® MEGADORA™ Screwdriver No.900 +2x100 JIS 900P2100J

I do a lot of work on small equipment carbs and always wondered why a normal Phillips screw driver didn't fit quite right. This fits perfectly. Didn't know this type of screw existed. Great addition to my tool boxes.

Where has this been my whole life?I bought this after reading an article about the different characteristics of what I (and most others) of screws classified as "Phillips".There ARE differences! This Japanese Standard driver works great on its matching screws, AND is also terrific on standard "Phillips" screws.I'm going to by more for home and garage use, and will also look for a similar driver/drill bit.

This JIS screw driver works well, but I find that the serration, or teeth, keep the driver from easily slipping into the screw. It is slightly annoying that you have to perfectly alight the driver with the screw otherwise it will not slip in. Other than that small gripe, it's a great screw driver.

This driver is extremely good. Works perfect on Japan Reel to reel tape machines. No more stripping

I absolutely love the screwdriver.Great for working on chainsaw carbs and other equipment where stripping a screw is not an option.Think I'll order an entire set of these, they're that good.

perfect - no BS, is the right tool - i love these for working on motorcycle/atv carbs

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. :-)

side-by-side of a snap on number 2 they look identical, but after putting my calipers and taking a measurement, the JIS has a considerably thicker Phillips head.I gave it four stars because JIS is nowhere on the handle to identify as JIS.I never knew that there was a difference until watching a YouTube video and explained the dot on top of the head identifies it as a Japanese standard bolt