Choose Option:A1-1 SDS Plus Shank Starrett Holesaw Arbor SDS Plus Shank to suit 14-30mm Diameter HolesawA2-1 SDS Plus Shank Starrett Holesaw Arbor SDS Plus Shank to suit 32-210mm Diameter HolesawA4 Quick-Hitch Starrett Holesaw Arbor 1/4" Hex Shank to suit 14-30mm Diameter HolesawA10 Quick-Hitch Starrett Holesaw Arbor 11/32" Hex Shank to suit 32-210mm Diameter Holesaw300mm Arbor Extension to suit A1 and A10 Arbors 9.5mm Chuck SizeA1 Starrett Holesaw Arbor 11/32" Hex Shank to suit 14-30mm Diameter HolesawA2 Starrett Holesaw Arbor 7/16" Hex Shank to suit 32-210mm Diameter Holesaw300mm Arbor Extension to suit A2 Arbors 13mm Chuck Size