Osborn Drive Arbor, Arbor Hole Size 3/8 in, 1/4 in Shank Dia, For Use with: 3 in Dia Single Brush
For brushes up to 3 in diameter only. Designed for use with a single brush only. Not for use with grinding wheels, abrasive discs, buffs, buffing pads or other non-brush perishable tools.