The D-530-75, D-540-100, D-550-100 and D-555-100 drivers have replaced theprevious generation (D-130-75, D-140-100, D-150-100 and D-155-100 drivers)J.I.S.(Japanese Industrial Standard) tips are slightly different than thosePhillips tips typically found in the U.S. All Phillips screws are not thesame. If you experience cam-outs, or find that you are ripping and damagingscrewheads, you are probably using a US Phillips screwdriver, when you shouldbe using a JIS screwdriver. As JIS screws become more popular, the best way toreduce cam-outs and/or ripping out screwheads, is to purchase JISscrewdrivers.
