Hall's-Shjac14 Chuck Adapter
Jacobs Chuck adapter 7/16" hex shank fits directly to 1/2" Jacobs Chuck with no alteration. This hex shank drill chuck adapter comes complete with heavy duty 7/16" hex shank, Jacobs Chuck 0-1/2" capacity with 1/2-20 mount, 1/4-20 left hand cap screw to prevent chuck reversal, check key. Hex Shank Adapter Length: 5 1/4".
Internal Reference:
SHJAC14
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