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This standard size arbor is perfect for chucking in a portable drill.
The smooth shank is 1/4” diameter. The threaded portion is 1/2” diameter and will hold material up to 3/4” thick. This allows you to assemble standard sanding mops, thin buffing heads, small wire wheels or other arbor mounted abrasives
This is the same arbor we include in our sanding mop kits.