Drill America DWDDRIFTS4 Qualtech Drift Key, #4 Size, 7" Length (Pack of 1) Go to amazon.com Related posts drift key mt2 buyer's guide for 2022 FeatureQualtech drift keyFor use with #4,5,6 morse taper shank drill chuck arbor#4 size4,5,6 Hole fitting7-inches length DescriptionDrill America Qualtech drift key for use with #4,5,6 morse taper shank drill chuck arbor. #4 size. 4,5,6 Hole fitting. 7-inches length.