Starrett A2E Arbors with 7/16in hex shank suitable to fit 1/2in capacity chuck.

Complete with 1/4in Pilot Drill - This arbor has a longer pilot drill for use with the Starrett Fast Cutting Holsaws

Use with Fast Cutting holesaws : 1.1/4 - 8. 9/32in. (32mm - 152mm).