PURPOSE: To enable all operations with one hand alone by attaching the split one side handle of pincers or such to a tip part through plural pieces of joint parts, and connecting them via a spring clamped to the handle and these joint parts.

CONSTITUTION: The split one side handle 3 of pincers is attached to a tip part 2 by plural pieces of joint parts 4, 5, 6, connecting them via a spring 7 clamped to a handle 1 and joint parts 5, and a lower end of the handle 3 is set down to a tool knife doubling as a lockup of a blade 9 and a saw 10 clamped to the handle 1 with a support shaft 11. Next, at time of using a pair of pincers, a part C is pulled in the desired direction whereby the handle 3 is drawn out, making it into a state of being used. In addition, at time of using a knife, the part C of the handle 3 is grasped so that the handle 3 is opened with a turning shaft 4 as the center, thereby releasing the lock of a part D, thus it is made unable.