Attributes . The handle is very user-friendly, with "a size that provides the optimal torque for each size, an indentation in the middle which fits the finger, and slits to prevent slippage even with oily hands". Designed and manufactured based on the ISO/JIS standard "Hexalobular hole for screw parts" it is appropriate for screws with holes such as the commercially-available Hex Lobe and LH Sticks. . Names