【物品用途】;本設計物品，係與工具配合使用的套筒。;【設計說明】;本設計之設計特點在於其整體大致呈不同大小直徑所形成階級圓柱狀的本體，其中，本體第一段的直徑係小於本體第二段的直徑及本體第三段的直徑，且於第一段內部形成有一近六角形狀(即相鄰二大平面間的接觸位置形成有一小平面)暨從第一段端面朝向其中間處所形成的凹陷狀套接凹部，並於套接凹部的每一大平面之中間處形成有一從第一段端面朝向其中間處所形成的凸出狀平面肋條(如：立體圖及前視圖)；而第二段的直徑係位於第一段的直徑與第二段的直徑之間，且第二段外表面分佈形成有等距離環形排列的複數個直條狀凸紋(如：立體圖、左、右側視圖、俯視圖及仰視圖)；又，第三段內部形成有一近四角形(即相鄰二大平面間的接觸位置形成有一圓槽)暨從第三段端面朝向其中間處所形成的凹陷狀套置凹槽，且套置凹槽與套接凹部係藉由一圓形穿孔加以連通(如：後視圖)，如是構成整體外觀具特異視覺效果之設計。[Use of item]; This designed item is a sleeve used in conjunction with tools. ;[Design Description];The design feature of this design is that its overall shape is a hierarchical cylindrical body formed by different diameters. The diameter of the first section of the body is smaller than the diameter of the second section of the body and the diameter of the third section of the body. , and a nearly hexagonal shape (that is, a small plane is formed at the contact position between two adjacent large planes) and a concave socket-shaped recess formed from the end surface of the first segment toward its middle is formed inside the first section, and is formed in the socket A protruding planar rib is formed in the middle of each large plane of the recessed portion from the end surface of the first segment toward its middle (such as: perspective view and front view); and the diameter of the second segment is between the diameter of the first segment and the diameter of the first segment. between the diameters of the second section, and the outer surface of the second section is distributed with a plurality of straight strips arranged in an equidistant ring (such as: three-dimensional view, left and right views, top view and bottom view); and the third section There is a nearly quadrangular shape (that is, a circular groove is formed at the contact position between two adjacent large planes) and a concave nesting groove formed from the end face of the third section toward its middle, and the nesting groove and the sleeve recess are in series. They are connected through a circular perforation (e.g. rear view), thus forming a design with a unique visual effect on the overall appearance.