Until now,the authors have researched and developed the system of sampling the blood of fetus and the insertion systems for solid organs like a liver,a brain, and a breast to which are both applied Curved Multi-Tube System(CMTS).We can make the accuracy of insertion better by using CMTS.Before,we have researched and developed the controls of CMTS mainly.Hereafter,we plan to develop a system of the superfine-pointed Endoscope as a new application of CMTS.So,in this research,we do basic research in CMTS itself as the examination to design the CMTS that have a property we want,that is proper for an Endoscope.Especially, we notice the material for the CMTS.We examine the basic property by experimenting with the inner needle made with stainless,titanium.