ITEM NAME:MT2 Spindle to MT1 Arbor Morse Taper Adapter Reducing Drill Sleeve P6Z6.Morse taper 2# to Morse taper 1#. The Morse Taper Sleeve is mainly used in drilling machine and lathe machine. Morse taper shank allows the tool to be inserted directly into the machine&. Drill sleeves is used to change the taper of the connective arbors.