Whiteside A220 Arbor 1/2"SH, 5/16"AD, 7/8"AL, 4"OAL.

Whiteside A220 Arbor 1/2"SH, 5/16"AD, 7/8"AL, 4"OAL. works wonderfully with a variety of materials, achieving great results at various speeds. Highlights: Whiteside Machine carries a complete range of standard arbors to fit all of our products. Accidents happen, you damage the threads or your shank has been marred by a bad collet. Just replace the arbor instead of the whole bit.  Arbors come with nut and washer(s).