VESSEL BALL GRIP Insulated Screwdriver 5PC. Set No.2005PBU Includes No.200 -5(3/16)x3", -6(1/4)x4", +1x3", +2x4", +3x6". VDE certified, reliable 100% dielectric inspection conducted. Ergonomic BALL GRIP for anti-fatigue and various way of driving. Non-step slim covered blade shank for preventing electrical short circuit. Identification of tip type by the color of cushion material as well as the end cap concave symbol. What is JIS DRIVE? JIS means Japanese Industrial Standards. This standard is applied for Japanese Standards screws, and is mainly used in Japanese-made cars, motorcycles, home appliances, etc. The tips of VESSEL screwdrivers and bits are manufactured in accordance with JIS. In addition, VESSEL has developed its own in-house standards to achieve even higher precision and quality tips. WHY FOR ALL SCREWS? As shown in the picture, VESSEL JISDRIVE was developed with the concept that the 4 sides of the tip (shown as blue) should fit the screw evenly, allowing you to turn screws with confidence. As a result, VESSEL tips can fit any standard screws and transmit force without loss of power.