**Contents**


**Takuma Kishimoto, Hayate Sakaguchi, Saki Suematsu, Kenichi Tashima, Satoshi Kajino and Shiori Gondo et al.** Deformation Behavior Causing Excessive Thinning of Outer Diameter of Micro Metal Tubes in Hollow Sinking Reprinted from: *Metals* **2020**, *10*, 1315, doi:10.3390/met10101315 . . . . . . . . . . . . . . . . . . . **159**
