Since the ratchet handle body supports the claws, the claws will not fall or the springs will not come off, and you can switch between left and right without fail. Also, even if a large load is applied, the stress is applied in the direction perpendicular to the claw, so the gear can be supported by the claw and the entire body. The swing head handle shaft uses an elliptical intermediate shaft that thickens in the direction in which torque is applied. This cross-sectional shape, which cannot be formed by cutting with a normal lathe, is an epoch-making shape that is unprecedented in the world and realizes a direct torque transmission feeling with less bending while achieving both high rigidity and light weight.