Dual Purpose Expansion Arbors

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Fillauer's Expansion  Arbors expand  while in use to apply  inside pressure to the sanding sleeve to hold it in place. These tools  prevent migration and "fly away" of the  sanding sleeve and  provide a smoother grinding surface for straighter lines and  higher-quality finish. Available in ½-13, -11, and M16 threads to fit most O&P machinery.