JIS #2 Screw Driver is a Pleasure
"If you are fixing to unscrew the unscriutable or adjust the setscrews on sour deraileur and brakes. It is so easy to use your JIS #2 screw driver. Nobody tells you that a regular Phillips head screwdriver slips on those little screws. The screws are made to Japanese Industrial Standard and only a JIS screwdriver is the right thing for those pesky little fasteners."
