Jacobs 20N Ball Bearing Drill Chuck on MT4 arbor. 3/8" to 1" capacity. Some dings here and there from use. Operates smoothly until about 2/3rd open and starts to get stiff, but does open completely as seen in the photos. I think there is some old stiff grease that needs to be cleaned out. Nothing I have can use this chuck, so I never bothered to disassemble it. Comes with K5 chuck key. $135 shipping included to lower 48.
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