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Precision can reach from 0.003 to 0.005mm, Protrusion length are difference from 20mm t0 200mm, MILLING CHUCK and other machine - details see: https://www.machineto.com/drill-chuck-holder-high-precision-milling-chuck-tool-holder-10157086

A Drill Chuck is the part of a drill that holds the rotating bit. Drill Chuck Holders are designed to hold the bit tightly and not loosen even when there is a high amount of torque. They can also be used to hold other types of rotating tools, such as screwdrivers or rotating spades for making large holes. Drill chucks can be with keys or key-less, depending on the preference of the user and the requirements of the tool.