Drill Chuck Key for Jacobs No.34 /B, No.3A /B, No.6A /B, No.14 /14N,S10 & K3 ^;

(D) Jacobs No.14N & 14 (Super Chucks) photo #5 & #6. b) Jacobs No.3A & No.3B, photo #4. This chuck key will fit the Jacobs Chucks previously manufactured at the Sheffield, (England) or Hartford (Connecticut, USA) factories before all their Drill Chuck production was transferred to China.

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