Standard Grade End Mill Holder Suitable for most shop requirements. Features include... 3/16" Holder Holds Double End Mills 3/8" Holder Holds Double End Mills 1/2" Holder Holds Double End Mills 5/8" Holder Holds Single End Mill 3/4" Holder Holds Single End Mill 7/8" Holder Holds Single End Mill 1" Holder Holds Single End Mill 1-1/4" Holder Holds Single End Mill 1-1/2" Holder Holds Single End Mill