Jacobs 41drill chuck with K30 key, mounted on a 1/2" straight shank arbor. Keyed Drill Chuck, Medium Duty, Bearing Type Plain Bearing,
Closed Length 2.50 In, Open Length 2.05 In, Chuck Diameter 1.43 In, Capacity Max. 0.375 In, Capacity Min. 0.04 In, Construction Steel
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