Starrett Holesaw Enlargement Arbor

Placing the pilot drill on your arbor, the A19 allows diameters to be enlarged by attaching a saw of the same size to that of the existing hole. This saw then acts as the pilot for the larger diameter saw that is attached to the arbor.

• Compatible threads: 1/2"x20 & 5/8"x18
• Min. hole enlargement: 4.7mm (3/16")