It is an object of the invention to provide a technique for further improving the vibration reducing performance in a power impact tool that linearly drives a tool bit by using a swinging mechanism. For this purpose, the data are received by a receiver and buffered by a buffer. The conductive material was implanted in a dummy word line in the related art. The modular instrument includes the hemipherical ball member is threadingly connected into the proximal end of said alignment shaft, the distal end of alignment shaft includes a handle and a knob. The method includes the step of contacting a complexing agent with the polyfunctional acyl halide prior substantial reaction between the polyfunctional acyl halide and a polyfunctional amine.