eBay

With fitted wooden case

For hand resizing of drilled and bored holes to precise size diameters.
Produces very accurate holes in a variety of normal ferrous and non-ferrous materials.
Used with either portable or stationary machines.
May be mounted in chucks, collets or similar toolholders.

Blades are adjustable and move within tapered slots in the reamer body.
To adjust these reamers the blades are moved within the slots by loosening the nut at one end and tightening the nut at the other.
Movement permits the reamer to be set to any desired diameter within the range of the size adjustment.
Adjustment feature allows reamer to maintain a specific size by compensating for wear.
Can be re-ground & re-adjusted to size.