Sherline’s drill chucks are available in 5/32″, 1/4″ and 3/8″ sizes. Runout is .003″ or less. If runout of less than this amount is required, collets should be used to hole the drill rather than a chuck.
The P/N 3072 1/4″ chuck includes a #1 Morse arbor and drawbolt (not shown) so that it can be mounted in the headstock of the lathe or mill. P/N 3072 has the same size capacity as the P/N 1072 chuck, which is 1/32 to 1/4″ drill sizes. P/N 3072 is usually purchased when it will be used only with a mill where the #0 Morse arbor is not required.