Jaws Center-Ground for absolute Straightness and alignment, one-piece sleeve eliminates crack between driving teeth Often found in other designs, Through-Hardened sleeve teeth, plus hardened nose and keyholes provide outstanding wear resistance, Each chuck 100% inspected for performance and precision, T.I.R. .004" Maximum at half capacity
The Jacobs 41BA Plain bearing chuck is the world's most widely used for portable, bench, or floor mounted power tools. The Jacobs 41BA Plain bearing chuck is an industrial grade quality chuck, with fully hardened and ground working components, offering exceptionally high accuracy, gripping power and durability. The chuck capacity is from 0.04-Inch to 0.375-Inch (1.0 Millimeter to 10.0 Millimeter) with 1/2-20 threaded mount. T.I.R. 0.014-Inch maximum at half capacity. Like all of Jacobs Plain Bearing Chucks, each Jacobs 41BA Plain bearing chuck is 100-Percent inspected for performance and precision, and includes a one year factory warranty.