Jacobs 6309D 36 3 Jacobs Taper Mount Heavy Duty Plain Bearing Chuck 3/16 To 3/4 Inch Capacity K4 Key

The Jacobs Plain Bearing Chuck is the world’s most widely used for medium or heavy-duty portable, bench or floor mounted power tools. This industrial quality chuck, with fully hardened and ground working components, offers exceptionally high accuracy, gripping power and durability. Both heavy and medium duty models are available in a wide range of capacities for use on threaded and taper mounted spindles.