Starrett XA2 Quick Hitch Arbor with Carbide Tipped Pilot Drill and 11mm / 7/16" Hex Shank

Fits hole saw sizes 32-210 mm / 1.1/4 - 8.9/32".
A set screw in the body allows for easy replacement of the 6.35mm (1/4") pilot drill.
Permit instant change of hole saws without tools or removing the arbor from the chuck.
Recommended for use with specific Diamond Grit Holesaws.