A19 Hole Enlargement Arbor
Replacing 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 holesaws: FCH, DCH, TCT Multi Purpose, CT & Diamond
Compatible threads: 1/2"x20 & 5/8"x18
Min. hole enlargement: 4.7mm (3/16")