ISO 238:2016规定了以下两件设备的尺寸: a） 莫氏锥柄工具的减速套筒； b） 莫氏锥柄工具用加长套筒。 它包括两个表格，分别给出了以毫米为单位的尺寸和以英寸为单位的相应尺寸。

ISO 238:2016 specifies the dimensions of the following two pieces of equipment: a) reduction sleeves for tools with Morse taper shanks; b) extension sockets for tools with Morse taper shanks. It comprises, for each of them, two tables giving the dimensions in millimetres and the corresponding dimensions in inches, respectively.