FK01110B three jaw self centering chuck is a specialized accessory for engraving milling machines and can also be used as a universal accessory for general machine tools. This product can hold shaft, disc, and sleeve parts for engraving, lettering, marking, and cutting. It has the functions of indexing and two directional rotation. With this product, evenly divided holes, grooves, and engraving lines can be machined in the circumferential direction.