vintage tool, Kimberly drill chuck adaptor to convert from 1/4 or 3/8 inch 1/2 inch bit

Vintage Kimberly standard three jaw drill chuck adaptor with the original box. This adaptor is made to convert a 1/4 inch or a 3/8 inch electric or hand drill (a breast or twist type drill, they won't work with a brace and bit type) to a 1/2 inch size drill. The adaptor drill chuck is made to take a 1/16 inch up to a 1/2" shank twist drill bit and would also work with a larger spade drill bit.

This has wear and age to the box and some light surface rust to the adaptor.