3M 30134, Spindle Extender Adapter 6 in Brush, 2 in x 1/2 in x 1 in, 7000046162 
Insize 7332, SPINDLE LIFT KNOB, 6928640312649
$4.64
For dial/electronic indicators with spindle diameter .177″ DIA or .197″ DIA.
Lifting knob
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