【物品用途】;本設計物品，係使用於手工具領域的套筒。;【設計說明】;本設計的主要設計特點在於：套筒本體係由大小徑所組成的階級狀，且於大小徑間的連結處形成有一凹弧曲面，並於接近大徑端下方處形成有凹環部，而凹環部表面設有數個等距離環形排列的長條淺凹狀之止滑層，並使止滑層的上下二端面分別與凹環部間保持有適當的間隙區(如：立體圖、前、後、左、右側視圖)；又，套筒本體的頂端面設有12個等距離環形排列的齒形柱，且齒形柱底緣係向其內部連結至套筒本體內部中間處的連結部之上錐面處，並於連結部上形成有一圓形階級狀的貫穿孔(如：俯視圖)；而套筒本體的底端面形成有四角形凹部，且四角形凹部之每一尖角處形成有圓弧凹槽，該四角形凹部及圓弧凹槽係於套筒本體內部朝向下延伸至套筒本體內部中間處的連結部上(如：仰視圖)。;如是構成整體外觀，已融入對稱設計暨數量對比性之設計，而致使其整體外觀具特異視覺效果，而符合設計專利申請要件，爰依法提出設計專利申請。[Item Usage];This design item is a socket used in the field of hand tools.; [Design Description];The main design features of this design are: the socket body is a hierarchical shape composed of large and small diameters, and a concave arc surface is formed at the connection between the large and small diameters, and a concave ring portion is formed near the lower part of the large diameter end, and the surface of the concave ring portion is provided with a number of long shallow concave anti-slip layers arranged in annular shapes at equal distances, and the upper and lower end surfaces of the anti-slip layer are respectively maintained with appropriate gaps with the concave ring portion (such as: three-dimensional view, front, rear, left and right side views); in addition, the top end surface of the socket body is provided with 12 toothed columns are arranged in an annular shape at equal distances, and the bottom edge of the toothed column is connected to the upper conical surface of the connecting part in the middle of the sleeve body, and a circular hierarchical through-hole is formed on the connecting part (such as: top view); and the bottom end surface of the sleeve body is formed with a quadrangular recess, and each sharp corner of the quadrangular recess is formed with an arc groove, and the quadrangular recess and the arc groove extend downward from the inside of the sleeve body to the connecting part in the middle of the sleeve body (such as: bottom view). ; The overall appearance is formed in this way, and the design of symmetry and quantitative contrast has been integrated, so that the overall appearance has a unique visual effect, and meets the requirements for design patent application, so a design patent application is filed in accordance with the law.