ISO 5415:2007规定了带有7/24外锥度编号30-40-45-50和60以及莫氏内锥度编号1至6（莫氏锥度编号4、5和6为带正驱动或不带正驱动）的减速套筒的尺寸。 这些套筒允许借助内部螺钉驱动带有螺纹孔的莫氏锥柄工具。该螺钉的形式及其在套筒中的固定由制造商自行决定。 7/24锥度符合ISO 297的要求。莫尔斯锥度符合ISO 296和ISO 5413。

ISO 5415:2007 specifies the dimensions of reduction sleeves with 7/24 external taper No. 30-40-45-50 and 60 and Morse internal taper No. 1 to 6 (Morse taper No. 4, 5 and 6 being either with positive drive or without positive drive). These sleeves permit driving of tools with Morse taper shanks with tapped holes with the aid of an internal screw. The form of this screw and its fixation in the sleeve are left to the manufacturer's discretion. 7/24 tapers are in accordance with ISO 297. Morse tapers are in accordance with ISO 296 and ISO 5413.