High precision, rugged, all steel drill chucks with B16 mounting tapers. Equally suitable for use in drill presses, milling machines or all types of lathes. Available as 13 or 16mm. The jaw opening range is 0-13mm or 3-16mm. These chucks fit the optional B16- 1, 2 or 3MT arbors listed separately. These are good chucks to upgrade the standard chucks offered on some machines, or as accessories for wood or metal turning lathes.